3664947 has 16 divisors (see below), whose sum is σ = 5741568. Its totient is φ = 2050080.

The previous prime is 3664943. The next prime is 3664957. The reversal of 3664947 is 7494663.

It is not a de Polignac number, because 3664947 - 2² = 3664943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (3664943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3843 + ... + 4700.

It is an arithmetic number, because the mean of its divisors is an integer number (358848).

Almost surely, 2^3664947 is an apocalyptic number.

3664947 is a deficient number, since it is larger than the sum of its proper divisors (2076621).

3664947 is a wasteful number, since it uses less digits than its factorization.

3664947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570.

The product of its digits is 108864, while the sum is 39.

The square root of 3664947 is about 1914.4051295376. The cubic root of 3664947 is about 154.1780562643.

The spelling of 3664947 in words is "three million, six hundred sixty-four thousand, nine hundred forty-seven".