3644625 has 16 divisors (see below), whose sum is σ = 6065280. Its totient is φ = 1943600.

The previous prime is 3644621. The next prime is 3644629. The reversal of 3644625 is 5264463.

It is an interprime number because it is at equal distance from previous prime (3644621) and next prime (3644629).

It is not a de Polignac number, because 3644625 - 2² = 3644621 is a prime.

3644625 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3644592 and 3644601.

It is not an unprimeable number, because it can be changed into a prime (3644621) 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 15 ways as a sum of consecutive naturals, for example, 4485 + ... + 5234.

It is an arithmetic number, because the mean of its divisors is an integer number (379080).

Almost surely, 2^3644625 is an apocalyptic number.

It is an amenable number.

3644625 is a deficient number, since it is larger than the sum of its proper divisors (2420655).

3644625 is an equidigital number, since it uses as much as digits as its factorization.

3644625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9737 (or 9727 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 3644625 is about 1909.0900974024. The cubic root of 3644625 is about 153.8925573164.

The spelling of 3644625 in words is "three million, six hundred forty-four thousand, six hundred twenty-five".