3645730 has 48 divisors (see below), whose sum is σ = 7584192. Its totient is φ = 1258400.

The previous prime is 3645727. The next prime is 3645731. The reversal of 3645730 is 375463.

It is not an unprimeable number, because it can be changed into a prime (3645731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27765 + ... + 27895.

It is an arithmetic number, because the mean of its divisors is an integer number (158004).

Almost surely, 2^3645730 is an apocalyptic number.

3645730 is an abundant number, since it is smaller than the sum of its proper divisors (3938462).

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

3645730 is a wasteful number, since it uses less digits than its factorization.

3645730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 3645730 is about 1909.3794803548. The cubic root of 3645730 is about 153.9081084447.

The spelling of 3645730 in words is "three million, six hundred forty-five thousand, seven hundred thirty".