631937670720 has 224 divisors, whose sum is σ = 2176243324416. Its totient is φ = 154735411200.

The previous prime is 631937670719. The next prime is 631937670731. The reversal of 631937670720 is 27076739136.

It is a Harshad number since it is a multiple of its sum of digits (51).

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 31 ways as a sum of consecutive naturals, for example, 196905 + ... + 1141335.

It is an arithmetic number, because the mean of its divisors is an integer number (9715371984).

Almost surely, 2^631937670720 is an apocalyptic number.

631937670720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631937670720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088121662208).

631937670720 is an abundant number, since it is smaller than the sum of its proper divisors (1544305653696).

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

631937670720 is a wasteful number, since it uses less digits than its factorization.

631937670720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944509 (or 944499 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 51.

The spelling of 631937670720 in words is "six hundred thirty-one billion, nine hundred thirty-seven million, six hundred seventy thousand, seven hundred twenty".