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68623832686 = 284674052429
BaseRepresentation
bin111111111010010011…
…001001011001101110
320120010111211220012211
4333322103021121232
52111020200121221
651305250521034
74646363645023
oct777223113156
9216114756184
1068623832686
1127115401212
1211371b9617a
1366182c1976
14346dd4954a
151bb98c76e1
hexffa4c966e

68623832686 has 8 divisors (see below), whose sum is σ = 102947931720. Its totient is φ = 34307855448.

The previous prime is 68623832639. The next prime is 68623832699.

It is a happy number.

68623832686 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×686238326862 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68623832686.

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, 2009281 + ... + 2043148.

It is an arithmetic number, because the mean of its divisors is an integer number (12868491465).

Almost surely, 268623832686 is an apocalyptic number.

68623832686 is a deficient number, since it is larger than the sum of its proper divisors (34324099034).

68623832686 is a wasteful number, since it uses less digits than its factorization.

68623832686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060898.

The product of its digits is 23887872, while the sum is 58.

The spelling of 68623832686 in words is "sixty-eight billion, six hundred twenty-three million, eight hundred thirty-two thousand, six hundred eighty-six".

Divisors: 1 2 8467 16934 4052429 8104858 34311916343 68623832686