630411664 has 15 divisors (see below), whose sum is σ = 1221617217. Its totient is φ = 315155616.

The previous prime is 630411571. The next prime is 630411707. The reversal of 630411664 is 466114036.

The square root of 630411664 is 25108.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 616032400 + 14379264 = 24820^2 + 3792^2 .

It is a super-2 number, since 2×630411664² = 794837732214497792, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 97294 + ... + 103570.

Almost surely, 2^630411664 is an apocalyptic number.

630411664 is the 25108-th square number.

It is an amenable number.

630411664 is a deficient number, since it is larger than the sum of its proper divisors (591205553).

630411664 is an frugal number, since it uses more digits than its factorization.

630411664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12562 (or 6279 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The cubic root of 630411664 is about 857.4485691939.

The spelling of 630411664 in words is "six hundred thirty million, four hundred eleven thousand, six hundred sixty-four".