663214624 has 12 divisors (see below), whose sum is σ = 1305703854. Its totient is φ = 331607296.

The previous prime is 663214613. The next prime is 663214633. The reversal of 663214624 is 426412366.

It can be written as a sum of positive squares in only one way, i.e., 628404624 + 34810000 = 25068^2 + 5900^2 .

It is a super-2 number, since 2×663214624² = 879707274974922752, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 663214624.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10362697 + ... + 10362760.

Almost surely, 2^663214624 is an apocalyptic number.

It is an amenable number.

663214624 is a deficient number, since it is larger than the sum of its proper divisors (642489230).

663214624 is a wasteful number, since it uses less digits than its factorization.

663214624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20725467 (or 20725459 counting only the distinct ones).

The product of its digits is 41472, while the sum is 34.

The square root of 663214624 is about 25752.9536946735. The cubic root of 663214624 is about 872.0700361782.

The spelling of 663214624 in words is "six hundred sixty-three million, two hundred fourteen thousand, six hundred twenty-four".