631546816 has 28 divisors (see below), whose sum is σ = 1255991392. Its totient is φ = 315076608.

The previous prime is 631546807. The next prime is 631546819. The reversal of 631546816 is 618645136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631546819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18976 + ... + 40288.

Almost surely, 2^631546816 is an apocalyptic number.

It is an amenable number.

631546816 is a deficient number, since it is larger than the sum of its proper divisors (624444576).

631546816 is a wasteful number, since it uses less digits than its factorization.

631546816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21788 (or 21778 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 631546816 is about 25130.5952177819. The cubic root of 631546816 is about 857.9629160804.

The spelling of 631546816 in words is "six hundred thirty-one million, five hundred forty-six thousand, eight hundred sixteen".