630451660 has 12 divisors (see below), whose sum is σ = 1323948528. Its totient is φ = 252180656.

The previous prime is 630451651. The next prime is 630451667. The reversal of 630451660 is 66154036.

It is not an unprimeable number, because it can be changed into a prime (630451667) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15761272 + ... + 15761311.

It is an arithmetic number, because the mean of its divisors is an integer number (110329044).

Almost surely, 2^630451660 is an apocalyptic number.

It is an amenable number.

630451660 is an abundant number, since it is smaller than the sum of its proper divisors (693496868).

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

630451660 is a wasteful number, since it uses less digits than its factorization.

630451660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31522592 (or 31522590 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 630451660 is about 25108.7964665772. The cubic root of 630451660 is about 857.4667022064.

The spelling of 630451660 in words is "six hundred thirty million, four hundred fifty-one thousand, six hundred sixty".