3640634056 has 32 divisors (see below), whose sum is σ = 6928416000. Its totient is φ = 1793102080.

The previous prime is 3640634047. The next prime is 3640634057. The reversal of 3640634056 is 6504360463.

It is a super-2 number, since 2×3640634056² = 26508432659414022272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3640634057) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 897120 + ... + 901168.

It is an arithmetic number, because the mean of its divisors is an integer number (216513000).

Almost surely, 2^3640634056 is an apocalyptic number.

It is an amenable number.

3640634056 is a deficient number, since it is larger than the sum of its proper divisors (3287781944).

3640634056 is a wasteful number, since it uses less digits than its factorization.

3640634056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709 (or 5705 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 37.

The square root of 3640634056 is about 60337.6669751160. Note that the first 3 decimals coincide. The cubic root of 3640634056 is about 1538.3636489660.

The spelling of 3640634056 in words is "three billion, six hundred forty million, six hundred thirty-four thousand, fifty-six".