2660637631 has 8 divisors (see below), whose sum is σ = 2776834944. Its totient is φ = 2544483480.

The previous prime is 2660637619. The next prime is 2660637689. The reversal of 2660637631 is 1367360662.

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

It is a cyclic number.

It is not a de Polignac number, because 2660637631 - 2²³ = 2652249023 is a prime.

It is a super-2 number, since 2×2660637631² = 14157985206986584322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660637131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225796 + ... + 237286.

It is an arithmetic number, because the mean of its divisors is an integer number (347104368).

Almost surely, 2^2660637631 is an apocalyptic number.

2660637631 is a deficient number, since it is larger than the sum of its proper divisors (116197313).

2660637631 is a wasteful number, since it uses less digits than its factorization.

2660637631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21581.

The product of its (nonzero) digits is 163296, while the sum is 40.

The square root of 2660637631 is about 51581.3690299123. The cubic root of 2660637631 is about 1385.6766851480.

The spelling of 2660637631 in words is "two billion, six hundred sixty million, six hundred thirty-seven thousand, six hundred thirty-one".