2660631585 has 16 divisors (see below), whose sum is σ = 4290533376. Its totient is φ = 1407829248.

The previous prime is 2660631583. The next prime is 2660631613. The reversal of 2660631585 is 5851360662.

It is a happy number.

It is not a de Polignac number, because 2660631585 - 2¹ = 2660631583 is a prime.

It is a super-2 number, since 2×2660631585² = 14157920862199224450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2660631581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696424 + ... + 700233.

It is an arithmetic number, because the mean of its divisors is an integer number (268158336).

Almost surely, 2^2660631585 is an apocalyptic number.

It is an amenable number.

2660631585 is a deficient number, since it is larger than the sum of its proper divisors (1629901791).

2660631585 is a wasteful number, since it uses less digits than its factorization.

2660631585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396792.

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 2660631585 is about 51581.3104234470. The cubic root of 2660631585 is about 1385.6756355490.

The spelling of 2660631585 in words is "two billion, six hundred sixty million, six hundred thirty-one thousand, five hundred eighty-five".