631694063 has 32 divisors (see below), whose sum is σ = 854999040. Its totient is φ = 450696960.

The previous prime is 631694047. The next prime is 631694071. The reversal of 631694063 is 360496136.

It is not a de Polignac number, because 631694063 - 2⁴ = 631694047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631694663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124643 + ... + 129611.

It is an arithmetic number, because the mean of its divisors is an integer number (26718720).

Almost surely, 2^631694063 is an apocalyptic number.

631694063 is a deficient number, since it is larger than the sum of its proper divisors (223304977).

631694063 is a wasteful number, since it uses less digits than its factorization.

631694063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5127.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 631694063 is about 25133.5246831796. The cubic root of 631694063 is about 858.0295897591.

The spelling of 631694063 in words is "six hundred thirty-one million, six hundred ninety-four thousand, sixty-three".