3956590665 has 64 divisors (see below), whose sum is σ = 7130534400. Its totient is φ = 2081376000.

The previous prime is 3956590633. The next prime is 3956590679. The reversal of 3956590665 is 5660956593.

3956590665 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3956590665 - 2⁵ = 3956590633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5985435 + ... + 5986095.

It is an arithmetic number, because the mean of its divisors is an integer number (111414600).

Almost surely, 2^3956590665 is an apocalyptic number.

It is an amenable number.

3956590665 is a deficient number, since it is larger than the sum of its proper divisors (3173943735).

3956590665 is a wasteful number, since it uses less digits than its factorization.

3956590665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215 (or 1209 counting only the distinct ones).

The product of its (nonzero) digits is 6561000, while the sum is 54.

The square root of 3956590665 is about 62901.4361123814. The cubic root of 3956590665 is about 1581.6378178985.

The spelling of 3956590665 in words is "three billion, nine hundred fifty-six million, five hundred ninety thousand, six hundred sixty-five".