10687031668 has 6 divisors (see below), whose sum is σ = 18702305426. Its totient is φ = 5343515832.

The previous prime is 10687031647. The next prime is 10687031681. The reversal of 10687031668 is 86613078601.

It can be written as a sum of positive squares in only one way, i.e., 10562083984 + 124947684 = 102772^2 + 11178^2 .

It is a super-2 number, since 2×10687031668² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1335878955 + ... + 1335878962.

Almost surely, 2^10687031668 is an apocalyptic number.

It is an amenable number.

10687031668 is a deficient number, since it is larger than the sum of its proper divisors (8015273758).

10687031668 is a wasteful number, since it uses less digits than its factorization.

10687031668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671757921 (or 2671757919 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 10687031668 in words is "ten billion, six hundred eighty-seven million, thirty-one thousand, six hundred sixty-eight".