3625731 has 6 divisors (see below), whose sum is σ = 5237180. Its totient is φ = 2417148.

The previous prime is 3625711. The next prime is 3625733. The reversal of 3625731 is 1375263.

It is a happy number.

3625731 is a `hidden beast` number, since 3 + 625 + 7 + 31 = 666.

3625731 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 3625731 - 2⁷ = 3625603 is a prime.

It is a super-2 number, since 2×3625731² = 26291850568722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3625695 and 3625704.

It is not an unprimeable number, because it can be changed into a prime (3625733) 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 5 ways as a sum of consecutive naturals, for example, 201421 + ... + 201438.

Almost surely, 2^3625731 is an apocalyptic number.

3625731 is a deficient number, since it is larger than the sum of its proper divisors (1611449).

3625731 is a wasteful number, since it uses less digits than its factorization.

3625731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402865 (or 402862 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 3625731 is about 1904.1352367939. The cubic root of 3625731 is about 153.6261663999.

It can be divided in two parts, 3625 and 731, that added together give a square (4356 = 66²).

The spelling of 3625731 in words is "three million, six hundred twenty-five thousand, seven hundred thirty-one".