3656700646 has 32 divisors (see below), whose sum is σ = 5922745920. Its totient is φ = 1686988800.

The previous prime is 3656700631. The next prime is 3656700653. The reversal of 3656700646 is 6460076563.

It is a super-2 number, since 2×3656700646² = 26742919228913634632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432750 + ... + 441118.

It is an arithmetic number, because the mean of its divisors is an integer number (185085810).

Almost surely, 2^3656700646 is an apocalyptic number.

3656700646 is a deficient number, since it is larger than the sum of its proper divisors (2266045274).

3656700646 is a wasteful number, since it uses less digits than its factorization.

3656700646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8640.

The product of its (nonzero) digits is 544320, while the sum is 43.

The square root of 3656700646 is about 60470.6593812239. The cubic root of 3656700646 is about 1540.6233275308.

The spelling of 3656700646 in words is "three billion, six hundred fifty-six million, seven hundred thousand, six hundred forty-six".