631777372 has 6 divisors (see below), whose sum is σ = 1105610408. Its totient is φ = 315888684.

The previous prime is 631777361. The next prime is 631777411. The reversal of 631777372 is 273777136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78972168 + ... + 78972175.

Almost surely, 2^631777372 is an apocalyptic number.

It is an amenable number.

631777372 is a deficient number, since it is larger than the sum of its proper divisors (473833036).

631777372 is a wasteful number, since it uses less digits than its factorization.

631777372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157944347 (or 157944345 counting only the distinct ones).

The product of its digits is 259308, while the sum is 43.

The square root of 631777372 is about 25135.1819567713. The cubic root of 631777372 is about 858.0673076193.

The spelling of 631777372 in words is "six hundred thirty-one million, seven hundred seventy-seven thousand, three hundred seventy-two".