3645900 has 54 divisors (see below), whose sum is σ = 11430692. Its totient is φ = 972000.

The previous prime is 3645899. The next prime is 3645913. The reversal of 3645900 is 95463.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1126 + ... + 2925.

Almost surely, 2^3645900 is an apocalyptic number.

3645900 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3645900 is an abundant number, since it is smaller than the sum of its proper divisors (7784792).

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

3645900 is a wasteful number, since it uses less digits than its factorization.

3645900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4071 (or 4061 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 3645900 is about 1909.4239969163. The cubic root of 3645900 is about 153.9105006470.

The spelling of 3645900 in words is "three million, six hundred forty-five thousand, nine hundred".