3664686 has 8 divisors (see below), whose sum is σ = 7329384. Its totient is φ = 1221560.

The previous prime is 3664681. The next prime is 3664691. The reversal of 3664686 is 6864663.

It is an interprime number because it is at equal distance from previous prime (3664681) and next prime (3664691).

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

3664686 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3664681) 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, 305385 + ... + 305396.

It is an arithmetic number, because the mean of its divisors is an integer number (916173).

Almost surely, 2^3664686 is an apocalyptic number.

3664686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3664686 is a wasteful number, since it uses less digits than its factorization.

3664686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610786.

The product of its digits is 124416, while the sum is 39.

The square root of 3664686 is about 1914.3369609345. The cubic root of 3664686 is about 154.1743962361.

The spelling of 3664686 in words is "three million, six hundred sixty-four thousand, six hundred eighty-six".