10707720665 has 16 divisors (see below), whose sum is σ = 13120418448. Its totient is φ = 8387122176.

The previous prime is 10707720643. The next prime is 10707720671. The reversal of 10707720665 is 56602770701.

It can be written as a sum of positive squares in 8 ways, for example, as 104693824 + 10603026841 = 10232^2 + 102971^2 .

It is a cyclic number.

It is not a de Polignac number, because 10707720665 - 2⁸ = 10707720409 is a prime.

It is a super-2 number, since 2×10707720665² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57062 + ... + 157071.

It is an arithmetic number, because the mean of its divisors is an integer number (820026153).

Almost surely, 2^10707720665 is an apocalyptic number.

It is an amenable number.

10707720665 is a deficient number, since it is larger than the sum of its proper divisors (2412697783).

10707720665 is a wasteful number, since it uses less digits than its factorization.

10707720665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214348.

The product of its (nonzero) digits is 123480, while the sum is 41.

The spelling of 10707720665 in words is "ten billion, seven hundred seven million, seven hundred twenty thousand, six hundred sixty-five".