3642656 has 24 divisors (see below), whose sum is σ = 7282800. Its totient is φ = 1793088.

The previous prime is 3642649. The next prime is 3642673. The reversal of 3642656 is 6562463.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a d-powerful number, because it can be written as 3⁸ + 6 + 4 + 2¹¹ + 6⁴ + 5⁹ + 6⁸ .

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, 1295 + ... + 2993.

It is an arithmetic number, because the mean of its divisors is an integer number (303450).

Almost surely, 2^3642656 is an apocalyptic number.

It is an amenable number.

3642656 is a deficient number, since it is larger than the sum of its proper divisors (3640144).

3642656 is a wasteful number, since it uses less digits than its factorization.

3642656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776 (or 1768 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 3642656 is about 1908.5743370380. The cubic root of 3642656 is about 153.8648389613.

The spelling of 3642656 in words is "three million, six hundred forty-two thousand, six hundred fifty-six".