3664559 has 4 divisors (see below), whose sum is σ = 3681216. Its totient is φ = 3647904.

The previous prime is 3664547. The next prime is 3664561. The reversal of 3664559 is 9554663.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3664559 - 2⁸ = 3664303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3664519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7994 + ... + 8439.

It is an arithmetic number, because the mean of its divisors is an integer number (920304).

Almost surely, 2^3664559 is an apocalyptic number.

3664559 is a deficient number, since it is larger than the sum of its proper divisors (16657).

3664559 is a wasteful number, since it uses less digits than its factorization.

3664559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16656.

The product of its digits is 97200, while the sum is 38.

The square root of 3664559 is about 1914.3037898933. The cubic root of 3664559 is about 154.1726152400.

The spelling of 3664559 in words is "three million, six hundred sixty-four thousand, five hundred fifty-nine".