631542960 has 80 divisors (see below), whose sum is σ = 2175322080. Its totient is φ = 168410880.

The previous prime is 631542949. The next prime is 631542983. The reversal of 631542960 is 69245136.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144031 + ... + 148350.

It is an arithmetic number, because the mean of its divisors is an integer number (27191526).

Almost surely, 2^631542960 is an apocalyptic number.

631542960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

631542960 is an abundant number, since it is smaller than the sum of its proper divisors (1543779120).

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

631542960 is a wasteful number, since it uses less digits than its factorization.

631542960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292403 (or 292391 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 631542960 is about 25130.5184984313. The cubic root of 631542960 is about 857.9611699382.

The spelling of 631542960 in words is "six hundred thirty-one million, five hundred forty-two thousand, nine hundred sixty".