631927740 has 48 divisors (see below), whose sum is σ = 1873482912. Its totient is φ = 158601216.

The previous prime is 631927739. The next prime is 631927781. The reversal of 631927740 is 47729136.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 308749 + ... + 310788.

It is an arithmetic number, because the mean of its divisors is an integer number (39030894).

Almost surely, 2^631927740 is an apocalyptic number.

631927740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

631927740 is an abundant number, since it is smaller than the sum of its proper divisors (1241555172).

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

631927740 is a wasteful number, since it uses less digits than its factorization.

631927740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619566 (or 619564 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 631927740 is about 25138.1729646369. The cubic root of 631927740 is about 858.1353778159.

The spelling of 631927740 in words is "six hundred thirty-one million, nine hundred twenty-seven thousand, seven hundred forty".