5660660665 has 32 divisors (see below), whose sum is σ = 7528660992. Its totient is φ = 4051320000.

The previous prime is 5660660651. The next prime is 5660660699.

5660660665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5660660665 - 2¹⁵ = 5660627897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2900440 + ... + 2902390.

It is an arithmetic number, because the mean of its divisors is an integer number (235270656).

Almost surely, 2^5660660665 is an apocalyptic number.

5660660665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5660660665 is a deficient number, since it is larger than the sum of its proper divisors (1868000327).

5660660665 is a wasteful number, since it uses less digits than its factorization.

5660660665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The square root of 5660660665 is about 75237.3621613624. The cubic root of 5660660665 is about 1782.1969952601.

The spelling of 5660660665 in words is "five billion, six hundred sixty million, six hundred sixty thousand, six hundred sixty-five".