631765340 has 12 divisors (see below), whose sum is σ = 1326707256. Its totient is φ = 252706128.

The previous prime is 631765327. The next prime is 631765361. The reversal of 631765340 is 43567136.

It is a self number, because there is not a number n which added to its sum of digits gives 631765340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15794114 + ... + 15794153.

It is an arithmetic number, because the mean of its divisors is an integer number (110558938).

Almost surely, 2^631765340 is an apocalyptic number.

It is an amenable number.

631765340 is an abundant number, since it is smaller than the sum of its proper divisors (694941916).

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

631765340 is a wasteful number, since it uses less digits than its factorization.

631765340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31588276 (or 31588274 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 631765340 is about 25134.9426098410. The cubic root of 631765340 is about 858.0618603780.

The spelling of 631765340 in words is "six hundred thirty-one million, seven hundred sixty-five thousand, three hundred forty".