3640622976 has 64 divisors (see below), whose sum is σ = 10744904400. Its totient is φ = 1213539840.

The previous prime is 3640622971. The next prime is 3640622987. The reversal of 3640622976 is 6792260463.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640622971) 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, 523255 + ... + 530166.

Almost surely, 2^3640622976 is an apocalyptic number.

3640622976 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3640622976 is an abundant number, since it is smaller than the sum of its proper divisors (7104281424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3640622976 is a wasteful number, since it uses less digits than its factorization.

3640622976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053444 (or 1053426 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The square root of 3640622976 is about 60337.5751584367. The cubic root of 3640622976 is about 1538.3620883325.

The spelling of 3640622976 in words is "three billion, six hundred forty million, six hundred twenty-two thousand, nine hundred seventy-six".