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68620799702686 = 27115322737036789
BaseRepresentation
bin11111001101001000001100…
…11000111111011010011110
322222222002021111221100102111
433212210012120333122132
532443240344210441221
6401535543222344234
720311455246364420
oct1746440630773236
9288862244840374
1068620799702686
111a956a10545370
127843206b8b07a
132c39bb538521a
1412d339b830810
157deeb791abe1
hex3e690663f69e

68620799702686 has 64 divisors (see below), whose sum is σ = 131327124042240. Its totient is φ = 26115379954560.

The previous prime is 68620799702683. The next prime is 68620799702701.

68620799702686 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×686207997026862 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68620799702683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16665621 + ... + 20371168.

It is an arithmetic number, because the mean of its divisors is an integer number (2051986313160).

Almost surely, 268620799702686 is an apocalyptic number.

68620799702686 is a deficient number, since it is larger than the sum of its proper divisors (62706324339554).

68620799702686 is a wasteful number, since it uses less digits than its factorization.

68620799702686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37037089.

The product of its (nonzero) digits is 1316818944, while the sum is 76.

The spelling of 68620799702686 in words is "sixty-eight trillion, six hundred twenty billion, seven hundred ninety-nine million, seven hundred two thousand, six hundred eighty-six".

Divisors: 1 2 7 11 14 22 53 77 106 154 227 371 454 583 742 1166 1589 2497 3178 4081 4994 8162 12031 17479 24062 34958 84217 132341 168434 264682 926387 1852774 37036789 74073578 259257523 407404679 518515046 814809358 1962949817 2851832753 3925899634 5703665506 8407351103 13740648719 16814702206 21592447987 27481297438 43184895974 58851457721 92480862133 117702915442 151147135909 184961724266 302294271818 445589608459 647366034931 891179216918 1294732069862 3119127259213 4901485693049 6238254518426 9802971386098 34310399851343 68620799702686