7660691665 has 32 divisors (see below), whose sum is σ = 10097882496. Its totient is φ = 5533032960.

The previous prime is 7660691663. The next prime is 7660691683. The reversal of 7660691665 is 5661960667.

It is not a de Polignac number, because 7660691665 - 2¹ = 7660691663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7660691663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8675314 + ... + 8676196.

It is an arithmetic number, because the mean of its divisors is an integer number (315558828).

Almost surely, 2^7660691665 is an apocalyptic number.

It is an amenable number.

7660691665 is a deficient number, since it is larger than the sum of its proper divisors (2437190831).

7660691665 is a wasteful number, since it uses less digits than its factorization.

7660691665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The square root of 7660691665 is about 87525.3772628259. The cubic root of 7660691665 is about 1971.3148535377.

The spelling of 7660691665 in words is "seven billion, six hundred sixty million, six hundred ninety-one thousand, six hundred sixty-five".