3996647625 has 64 divisors (see below), whose sum is σ = 7032729600. Its totient is φ = 2010052800.

The previous prime is 3996647609. The next prime is 3996647653. The reversal of 3996647625 is 5267466993.

It is not a de Polignac number, because 3996647625 - 2⁴ = 3996647609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1701702 + ... + 1704048.

It is an arithmetic number, because the mean of its divisors is an integer number (109886400).

Almost surely, 2^3996647625 is an apocalyptic number.

It is an amenable number.

3996647625 is a deficient number, since it is larger than the sum of its proper divisors (3036081975).

3996647625 is a wasteful number, since it uses less digits than its factorization.

3996647625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623 (or 2613 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 57.

The square root of 3996647625 is about 63219.0447966434. The cubic root of 3996647625 is about 1586.9574643890.

The spelling of 3996647625 in words is "three billion, nine hundred ninety-six million, six hundred forty-seven thousand, six hundred twenty-five".