631386622 has 4 divisors (see below), whose sum is σ = 947079936. Its totient is φ = 315693310.

The previous prime is 631386617. The next prime is 631386629. The reversal of 631386622 is 226683136.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631386629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157846654 + ... + 157846657.

It is an arithmetic number, because the mean of its divisors is an integer number (236769984).

Almost surely, 2^631386622 is an apocalyptic number.

631386622 is a deficient number, since it is larger than the sum of its proper divisors (315693314).

631386622 is a wasteful number, since it uses less digits than its factorization.

631386622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315693313.

The product of its digits is 62208, while the sum is 37.

The square root of 631386622 is about 25127.4077851258. The cubic root of 631386622 is about 857.8903682078.

The spelling of 631386622 in words is "six hundred thirty-one million, three hundred eighty-six thousand, six hundred twenty-two".