3664943656 has 16 divisors (see below), whose sum is σ = 7496475840. Its totient is φ = 1665883440.

The previous prime is 3664943641. The next prime is 3664943663. The reversal of 3664943656 is 6563494663.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20823456 + ... + 20823631.

It is an arithmetic number, because the mean of its divisors is an integer number (468529740).

Almost surely, 2^3664943656 is an apocalyptic number.

It is an amenable number.

3664943656 is an abundant number, since it is smaller than the sum of its proper divisors (3831532184).

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

3664943656 is a wasteful number, since it uses less digits than its factorization.

3664943656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41647104 (or 41647100 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 52.

The square root of 3664943656 is about 60538.7781178312. The cubic root of 3664943656 is about 1541.7800937215.

The spelling of 3664943656 in words is "three billion, six hundred sixty-four million, nine hundred forty-three thousand, six hundred fifty-six".