3644660 has 12 divisors (see below), whose sum is σ = 7653828. Its totient is φ = 1457856.

The previous prime is 3644659. The next prime is 3644699. The reversal of 3644660 is 664463.

It can be written as a sum of positive squares in 2 ways, for example, as 2062096 + 1582564 = 1436^2 + 1258^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91097 + ... + 91136.

It is an arithmetic number, because the mean of its divisors is an integer number (637819).

Almost surely, 2^3644660 is an apocalyptic number.

It is an amenable number.

3644660 is an abundant number, since it is smaller than the sum of its proper divisors (4009168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3644660 is a wasteful number, since it uses less digits than its factorization.

3644660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182242 (or 182240 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 3644660 is about 1909.0992640510. The cubic root of 3644660 is about 153.8930499342.

The spelling of 3644660 in words is "three million, six hundred forty-four thousand, six hundred sixty".