631714647 has 4 divisors (see below), whose sum is σ = 842286200. Its totient is φ = 421143096.

The previous prime is 631714609. The next prime is 631714661. The reversal of 631714647 is 746417136.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 631714647 - 2⁷ = 631714519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631714607) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 105285772 + ... + 105285777.

It is an arithmetic number, because the mean of its divisors is an integer number (210571550).

Almost surely, 2^631714647 is an apocalyptic number.

631714647 is a deficient number, since it is larger than the sum of its proper divisors (210571553).

631714647 is a wasteful number, since it uses less digits than its factorization.

631714647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210571552.

The product of its digits is 84672, while the sum is 39.

The square root of 631714647 is about 25133.9341727474. The cubic root of 631714647 is about 858.0389094020.

The spelling of 631714647 in words is "six hundred thirty-one million, seven hundred fourteen thousand, six hundred forty-seven".