3664921 has 8 divisors (see below), whose sum is σ = 3975104. Its totient is φ = 3358800.

The previous prime is 3664901. The next prime is 3664937. The reversal of 3664921 is 1294663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3664921 - 2¹⁹ = 3140633 is a prime.

It is a Duffinian number.

3664921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3664901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1030 + ... + 2896.

It is an arithmetic number, because the mean of its divisors is an integer number (496888).

Almost surely, 2^3664921 is an apocalyptic number.

It is an amenable number.

3664921 is a deficient number, since it is larger than the sum of its proper divisors (310183).

3664921 is a wasteful number, since it uses less digits than its factorization.

3664921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031.

The product of its digits is 7776, while the sum is 31.

The square root of 3664921 is about 1914.3983389044. The cubic root of 3664921 is about 154.1776916716.

The spelling of 3664921 in words is "three million, six hundred sixty-four thousand, nine hundred twenty-one".