3664644032 has 56 divisors (see below), whose sum is σ = 8799783264. Its totient is φ = 1478172672.

The previous prime is 3664644023. The next prime is 3664644037. The reversal of 3664644032 is 2304464663.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3664644037) 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, 232973 + ... + 248204.

Almost surely, 2^3664644032 is an apocalyptic number.

3664644032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3664644032 is an abundant number, since it is smaller than the sum of its proper divisors (5135139232).

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

3664644032 is a wasteful number, since it uses less digits than its factorization.

3664644032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481213 (or 481203 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 38.

The square root of 3664644032 is about 60536.3034219963. The cubic root of 3664644032 is about 1541.7380769857.

The spelling of 3664644032 in words is "three billion, six hundred sixty-four million, six hundred forty-four thousand, thirty-two".