3640213655 has 32 divisors (see below), whose sum is σ = 4998672000. Its totient is φ = 2529808896.

The previous prime is 3640213651. The next prime is 3640213663. The reversal of 3640213655 is 5563120463.

3640213655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3640213655 - 2² = 3640213651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640213651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313646 + ... + 325044.

It is an arithmetic number, because the mean of its divisors is an integer number (156208500).

Almost surely, 2^3640213655 is an apocalyptic number.

3640213655 is a deficient number, since it is larger than the sum of its proper divisors (1358458345).

3640213655 is a wasteful number, since it uses less digits than its factorization.

3640213655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11468 (or 11434 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 3640213655 is about 60334.1831385824. The cubic root of 3640213655 is about 1538.3044326773.

The spelling of 3640213655 in words is "three billion, six hundred forty million, two hundred thirteen thousand, six hundred fifty-five".