3638264 has 16 divisors (see below), whose sum is σ = 7796400. Its totient is φ = 1559232.

The previous prime is 3638251. The next prime is 3638267. The reversal of 3638264 is 4628363.

It is a self number, because there is not a number n which added to its sum of digits gives 3638264.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3638267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32429 + ... + 32540.

It is an arithmetic number, because the mean of its divisors is an integer number (487275).

Almost surely, 2^3638264 is an apocalyptic number.

It is an amenable number.

3638264 is an abundant number, since it is smaller than the sum of its proper divisors (4158136).

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

3638264 is a wasteful number, since it uses less digits than its factorization.

3638264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64982 (or 64978 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

The square root of 3638264 is about 1907.4233929571. The cubic root of 3638264 is about 153.8029751133.

Subtracting 3638264 from its reverse (4628363), we obtain a palindrome (990099).

The spelling of 3638264 in words is "three million, six hundred thirty-eight thousand, two hundred sixty-four".