3638825 has 12 divisors (see below), whose sum is σ = 4590480. Its totient is φ = 2860560.

The previous prime is 3638809. The next prime is 3638827. The reversal of 3638825 is 5288363.

3638825 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 3638825 - 2⁴ = 3638809 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3638827) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 242 + ... + 2708.

It is an arithmetic number, because the mean of its divisors is an integer number (382540).

Almost surely, 2^3638825 is an apocalyptic number.

It is an amenable number.

3638825 is a deficient number, since it is larger than the sum of its proper divisors (951655).

3638825 is a wasteful number, since it uses less digits than its factorization.

3638825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536 (or 2531 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 3638825 is about 1907.5704443087. The cubic root of 3638825 is about 153.8108798938.

The spelling of 3638825 in words is "three million, six hundred thirty-eight thousand, eight hundred twenty-five".