3239644656 has 40 divisors (see below), whose sum is σ = 8376199504. Its totient is φ = 1078963200.

The previous prime is 3239644633. The next prime is 3239644657. The reversal of 3239644656 is 6564469323.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3239644657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29550 + ... + 85746.

Almost surely, 2^3239644656 is an apocalyptic number.

It is an amenable number.

3239644656 is an abundant number, since it is smaller than the sum of its proper divisors (5136554848).

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

3239644656 is a wasteful number, since it uses less digits than its factorization.

3239644656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57409 (or 57403 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 48.

The square root of 3239644656 is about 56917.8764185735. The cubic root of 3239644656 is about 1479.6731467154.

The spelling of 3239644656 in words is "three billion, two hundred thirty-nine million, six hundred forty-four thousand, six hundred fifty-six".