3653664 has 48 divisors (see below), whose sum is σ = 10963008. Its totient is φ = 1043712.

The previous prime is 3653659. The next prime is 3653669. The reversal of 3653664 is 4663563.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3653659) and next prime (3653669).

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (3653669) 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, 2047 + ... + 3390.

It is an arithmetic number, because the mean of its divisors is an integer number (228396).

Almost surely, 2^3653664 is an apocalyptic number.

It is an amenable number.

3653664 is an abundant number, since it is smaller than the sum of its proper divisors (7309344).

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

3653664 is a wasteful number, since it uses less digits than its factorization.

3653664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5457 (or 5449 counting only the distinct ones).

The product of its digits is 38880, while the sum is 33.

The square root of 3653664 is about 1911.4559895535. The cubic root of 3653664 is about 154.0196747787.

The spelling of 3653664 in words is "three million, six hundred fifty-three thousand, six hundred sixty-four".