3612645 has 24 divisors (see below), whose sum is σ = 6410976. Its totient is φ = 1880928.

The previous prime is 3612613. The next prime is 3612659. The reversal of 3612645 is 5462163.

3612645 is a `hidden beast` number, since 3 + 6 + 12 + 645 = 666.

It is not a de Polignac number, because 3612645 - 2⁵ = 3612613 is a prime.

3612645 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1002 + ... + 2868.

It is an arithmetic number, because the mean of its divisors is an integer number (267124).

Almost surely, 2^3612645 is an apocalyptic number.

It is an amenable number.

3612645 is a deficient number, since it is larger than the sum of its proper divisors (2798331).

3612645 is a wasteful number, since it uses less digits than its factorization.

3612645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921 (or 1918 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 3612645 is about 1900.6959251811. The cubic root of 3612645 is about 153.4411209140.

The spelling of 3612645 in words is "three million, six hundred twelve thousand, six hundred forty-five".