630447375720 has 128 divisors (see below), whose sum is σ = 2019676032000. Its totient is φ = 157085859840.

The previous prime is 630447375673. The next prime is 630447375757. The reversal of 630447375720 is 27573744036.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 630447375720.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2814105 + ... + 3029864.

It is an arithmetic number, because the mean of its divisors is an integer number (15778719000).

Almost surely, 2^630447375720 is an apocalyptic number.

630447375720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

630447375720 is an abundant number, since it is smaller than the sum of its proper divisors (1389228656280).

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

630447375720 is a wasteful number, since it uses less digits than its factorization.

630447375720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844043 (or 5844039 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 48.

The spelling of 630447375720 in words is "six hundred thirty billion, four hundred forty-seven million, three hundred seventy-five thousand, seven hundred twenty".