3664387 has 4 divisors (see below), whose sum is σ = 3668616. Its totient is φ = 3660160.

The previous prime is 3664361. The next prime is 3664393. The reversal of 3664387 is 7834663.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3664387 - 2⁷ = 3664259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3664307) 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, 289 + ... + 2722.

It is an arithmetic number, because the mean of its divisors is an integer number (917154).

Almost surely, 2^3664387 is an apocalyptic number.

3664387 is a deficient number, since it is larger than the sum of its proper divisors (4229).

3664387 is a wasteful number, since it uses less digits than its factorization.

3664387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4228.

The product of its digits is 72576, while the sum is 37.

The square root of 3664387 is about 1914.2588644172. The cubic root of 3664387 is about 154.1702031167.

It can be divided in two parts, 366 and 4387, that added together give a triangular number (4753 = T₉₇).

The spelling of 3664387 in words is "three million, six hundred sixty-four thousand, three hundred eighty-seven".