3644688 has 20 divisors (see below), whose sum is σ = 9415568. Its totient is φ = 1214880.

The previous prime is 3644659. The next prime is 3644699. The reversal of 3644688 is 8864463.

3644688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37918 + ... + 38013.

Almost surely, 2^3644688 is an apocalyptic number.

It is an amenable number.

3644688 is an abundant number, since it is smaller than the sum of its proper divisors (5770880).

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

3644688 is a wasteful number, since it uses less digits than its factorization.

3644688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75942 (or 75936 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 3644688 is about 1909.1065973381. The cubic root of 3644688 is about 153.8934440263.

The spelling of 3644688 in words is "three million, six hundred forty-four thousand, six hundred eighty-eight".