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68693706 = 23231307401
BaseRepresentation
bin1000001100000…
…10111011001010
311210021000001100
410012002323022
5120041144311
610452202230
71462613124
oct406027312
9153230040
1068693706
1135859664
121b009376
1311302083
1491a2214
15606da56
hex4182eca

68693706 has 48 divisors (see below), whose sum is σ = 154522368. Its totient is φ = 22032000.

The previous prime is 68693701. The next prime is 68693711. The reversal of 68693706 is 60739686.

It is an interprime number because it is at equal distance from previous prime (68693701) and next prime (68693711).

It is not an unprimeable number, because it can be changed into a prime (68693701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171106 + ... + 171506.

It is an arithmetic number, because the mean of its divisors is an integer number (3219216).

Almost surely, 268693706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68693706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77261184).

68693706 is an abundant number, since it is smaller than the sum of its proper divisors (85828662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68693706 is a wasteful number, since it uses less digits than its factorization.

68693706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 68693706 is about 8288.1666247729. The cubic root of 68693706 is about 409.5487917460.

The spelling of 68693706 in words is "sixty-eight million, six hundred ninety-three thousand, seven hundred six".

Divisors: 1 2 3 6 9 18 31 62 93 186 279 307 401 558 614 802 921 1203 1842 2406 2763 3609 5526 7218 9517 12431 19034 24862 28551 37293 57102 74586 85653 111879 123107 171306 223758 246214 369321 738642 1107963 2215926 3816317 7632634 11448951 22897902 34346853 68693706