630900306720 has 72 divisors (see below), whose sum is σ = 2152947301596. Its totient is φ = 168240081408.

The previous prime is 630900306679. The next prime is 630900306731. The reversal of 630900306720 is 27603009036.

It can be written as a sum of positive squares in 2 ways, for example, as 629794611216 + 1105695504 = 793596^2 + 33252^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 219061167 + ... + 219064046.

Almost surely, 2^630900306720 is an apocalyptic number.

630900306720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

630900306720 is an abundant number, since it is smaller than the sum of its proper divisors (1522046994876).

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

630900306720 is a wasteful number, since it uses less digits than its factorization.

630900306720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438125234 (or 438125223 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 36.

The spelling of 630900306720 in words is "six hundred thirty billion, nine hundred million, three hundred six thousand, seven hundred twenty".