3648638 has 24 divisors (see below), whose sum is σ = 6577344. Its totient is φ = 1512000.

The previous prime is 3648587. The next prime is 3648643. The reversal of 3648638 is 8368463.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2438 + ... + 3638.

It is an arithmetic number, because the mean of its divisors is an integer number (274056).

Almost surely, 2^3648638 is an apocalyptic number.

3648638 is a deficient number, since it is larger than the sum of its proper divisors (2928706).

3648638 is a wasteful number, since it uses less digits than its factorization.

3648638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248 (or 1241 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 3648638 is about 1910.1408325042. The cubic root of 3648638 is about 153.9490189375.

The spelling of 3648638 in words is "three million, six hundred forty-eight thousand, six hundred thirty-eight".