3645662 has 16 divisors (see below), whose sum is σ = 5701632. Its totient is φ = 1746360.

The previous prime is 3645659. The next prime is 3645683. The reversal of 3645662 is 2665463.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7643 + ... + 8105.

It is an arithmetic number, because the mean of its divisors is an integer number (356352).

Almost surely, 2^3645662 is an apocalyptic number.

3645662 is a deficient number, since it is larger than the sum of its proper divisors (2055970).

3645662 is a wasteful number, since it uses less digits than its factorization.

3645662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623.

The product of its digits is 25920, while the sum is 32.

The square root of 3645662 is about 1909.3616734396. The cubic root of 3645662 is about 153.9071515429.

The spelling of 3645662 in words is "three million, six hundred forty-five thousand, six hundred sixty-two".