3664520 has 48 divisors (see below), whose sum is σ = 8786340. Its totient is φ = 1375232.

The previous prime is 3664519. The next prime is 3664547. The reversal of 3664520 is 254663.

It can be written as a sum of positive squares in 6 ways, for example, as 1653796 + 2010724 = 1286^2 + 1418^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3664520.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11402 + ... + 11718.

Almost surely, 2^3664520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3664520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4393170).

3664520 is an abundant number, since it is smaller than the sum of its proper divisors (5121820).

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

3664520 is a wasteful number, since it uses less digits than its factorization.

3664520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 3664520 is about 1914.2936033953. The cubic root of 3664520 is about 154.1720683117.

The spelling of 3664520 in words is "three million, six hundred sixty-four thousand, five hundred twenty".