3664725 has 24 divisors (see below), whose sum is σ = 6121632. Its totient is φ = 1934400.

The previous prime is 3664723. The next prime is 3664747. The reversal of 3664725 is 5274663.

It is not a de Polignac number, because 3664725 - 2¹ = 3664723 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 6 + 6⁸ + 4⁶ + 7 + 2¹³ + 5⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3664721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9639 + ... + 10011.

It is an arithmetic number, because the mean of its divisors is an integer number (255068).

Almost surely, 2^3664725 is an apocalyptic number.

It is an amenable number.

3664725 is a deficient number, since it is larger than the sum of its proper divisors (2456907).

3664725 is a wasteful number, since it uses less digits than its factorization.

3664725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 512 counting only the distinct ones).

The product of its digits is 30240, while the sum is 33.

The square root of 3664725 is about 1914.3471472019. The cubic root of 3664725 is about 154.1749431479.

The spelling of 3664725 in words is "three million, six hundred sixty-four thousand, seven hundred twenty-five".