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68621412686 = 2231491769841
BaseRepresentation
bin111111111010001001…
…111010100101001110
320120010100021221121012
4333322021322211032
52111014040201221
651305123005222
74646334245441
oct777211724516
9216110257535
1068621412686
1127113aa9012
1211371209812
136617955308
14346d8b9658
151bb959a65b
hexffa27a94e

68621412686 has 8 divisors (see below), whose sum is σ = 107407428624. Its totient is φ = 32818936480.

The previous prime is 68621412677. The next prime is 68621412737.

68621412686 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 745884875 + ... + 745884966.

It is an arithmetic number, because the mean of its divisors is an integer number (13425928578).

Almost surely, 268621412686 is an apocalyptic number.

68621412686 is a deficient number, since it is larger than the sum of its proper divisors (38786015938).

68621412686 is a wasteful number, since it uses less digits than its factorization.

68621412686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491769866.

The product of its digits is 1327104, while the sum is 50.

The spelling of 68621412686 in words is "sixty-eight billion, six hundred twenty-one million, four hundred twelve thousand, six hundred eighty-six".

Divisors: 1 2 23 46 1491769841 2983539682 34310706343 68621412686