3660664 has 32 divisors (see below), whose sum is σ = 7920000. Its totient is φ = 1553760.

The previous prime is 3660653. The next prime is 3660667. The reversal of 3660664 is 4660663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3660667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7087 + ... + 7585.

It is an arithmetic number, because the mean of its divisors is an integer number (247500).

Almost surely, 2^3660664 is an apocalyptic number.

It is an amenable number.

3660664 is an abundant number, since it is smaller than the sum of its proper divisors (4259336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3660664 is a wasteful number, since it uses less digits than its factorization.

3660664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 3660664 is about 1913.2861782807. The cubic root of 3660664 is about 154.1179733566.

Subtracting 3660664 from its reverse (4660663), we obtain a palindrome (999999).

The spelling of 3660664 in words is "three million, six hundred sixty thousand, six hundred sixty-four".