3646664 has 16 divisors (see below), whose sum is σ = 7814400. Its totient is φ = 1562832.

The previous prime is 3646661. The next prime is 3646681. The reversal of 3646664 is 4666463.

3646664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3646661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32504 + ... + 32615.

It is an arithmetic number, because the mean of its divisors is an integer number (488400).

Almost surely, 2^3646664 is an apocalyptic number.

It is an amenable number.

3646664 is an abundant number, since it is smaller than the sum of its proper divisors (4167736).

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

3646664 is a wasteful number, since it uses less digits than its factorization.

3646664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65132 (or 65128 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 3646664 is about 1909.6240467694. The cubic root of 3646664 is about 153.9212505679.

The spelling of 3646664 in words is "three million, six hundred forty-six thousand, six hundred sixty-four".