631596386 has 4 divisors (see below), whose sum is σ = 947394582. Its totient is φ = 315798192.

The previous prime is 631596373. The next prime is 631596397. The reversal of 631596386 is 683695136.

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

It can be written as a sum of positive squares in only one way, i.e., 436016161 + 195580225 = 20881^2 + 13985^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 631596386.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157899095 + ... + 157899098.

Almost surely, 2^631596386 is an apocalyptic number.

631596386 is a deficient number, since it is larger than the sum of its proper divisors (315798196).

631596386 is a wasteful number, since it uses less digits than its factorization.

631596386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315798195.

The product of its digits is 699840, while the sum is 47.

The square root of 631596386 is about 25131.5814464590. The cubic root of 631596386 is about 857.9853626133.

The spelling of 631596386 in words is "six hundred thirty-one million, five hundred ninety-six thousand, three hundred eighty-six".