3646624 has 12 divisors (see below), whose sum is σ = 7179354. Its totient is φ = 1823296.

The previous prime is 3646603. The next prime is 3646633. The reversal of 3646624 is 4266463.

It can be written as a sum of positive squares in only one way, i.e., 2347024 + 1299600 = 1532^2 + 1140^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56947 + ... + 57010.

Almost surely, 2^3646624 is an apocalyptic number.

It is an amenable number.

3646624 is a deficient number, since it is larger than the sum of its proper divisors (3532730).

3646624 is a wasteful number, since it uses less digits than its factorization.

3646624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113967 (or 113959 counting only the distinct ones).

The product of its digits is 20736, while the sum is 31.

The square root of 3646624 is about 1909.6135734750. The cubic root of 3646624 is about 153.9206877821.

The spelling of 3646624 in words is "three million, six hundred forty-six thousand, six hundred twenty-four".