630705648 has 40 divisors (see below), whose sum is σ = 1633808128. Its totient is φ = 209656512.

The previous prime is 630705631. The next prime is 630705683. The reversal of 630705648 is 846507036.

It is a super-2 number, since 2×630705648² = 795579228838199808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286 + ... + 35517.

Almost surely, 2^630705648 is an apocalyptic number.

It is an amenable number.

630705648 is an abundant number, since it is smaller than the sum of its proper divisors (1003102480).

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

630705648 is a wasteful number, since it uses less digits than its factorization.

630705648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36181 (or 36175 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 630705648 is about 25113.8537066696. The cubic root of 630705648 is about 857.5818350161.

The spelling of 630705648 in words is "six hundred thirty million, seven hundred five thousand, six hundred forty-eight".