3640264 has 8 divisors (see below), whose sum is σ = 6825510. Its totient is φ = 1820128.

The previous prime is 3640249. The next prime is 3640289. The reversal of 3640264 is 4620463.

It can be written as a sum of positive squares in only one way, i.e., 2722500 + 917764 = 1650^2 + 958^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227509 + ... + 227524.

Almost surely, 2^3640264 is an apocalyptic number.

It is an amenable number.

3640264 is a deficient number, since it is larger than the sum of its proper divisors (3185246).

3640264 is a wasteful number, since it uses less digits than its factorization.

3640264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455039 (or 455035 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 3640264 is about 1907.9475883787. The cubic root of 3640264 is about 153.8311524347.

The spelling of 3640264 in words is "three million, six hundred forty thousand, two hundred sixty-four".