631474722 has 18 divisors (see below), whose sum is σ = 1368426267. Its totient is φ = 210456036.

The previous prime is 631474703. The next prime is 631474771. The reversal of 631474722 is 227474136.

It can be written as a sum of positive squares in only one way, i.e., 315737361 + 315737361 = 17769^2 + 17769^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=17769.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 103653 + ... + 109575.

Almost surely, 2^631474722 is an apocalyptic number.

631474722 is an abundant number, since it is smaller than the sum of its proper divisors (736951545).

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

631474722 is an frugal number, since it uses more digits than its factorization.

631474722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11854 (or 5928 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 631474722 is about 25129.1607898075. The cubic root of 631474722 is about 857.9302680219.

Multiplying 631474722 by its product of digits (56448), we get a square (35645485107456 = 5970384²).

The spelling of 631474722 in words is "six hundred thirty-one million, four hundred seventy-four thousand, seven hundred twenty-two".