3664994 has 4 divisors (see below), whose sum is σ = 5497494. Its totient is φ = 1832496.

The previous prime is 3664963. The next prime is 3665017. The reversal of 3664994 is 4994663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4994663 = 19 ⋅262877.

It can be written as a sum of positive squares in only one way, i.e., 2845969 + 819025 = 1687^2 + 905^2 .

It is a Curzon number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 916247 + ... + 916250.

Almost surely, 2^3664994 is an apocalyptic number.

3664994 is a deficient number, since it is larger than the sum of its proper divisors (1832500).

3664994 is a wasteful number, since it uses less digits than its factorization.

3664994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832499.

The product of its digits is 139968, while the sum is 41.

The square root of 3664994 is about 1914.4174048519. The cubic root of 3664994 is about 154.1787153314.

The spelling of 3664994 in words is "three million, six hundred sixty-four thousand, nine hundred ninety-four".