631971662 has 16 divisors (see below), whose sum is σ = 1086293472. Its totient is φ = 270116640.

The previous prime is 631971661. The next prime is 631971677. The reversal of 631971662 is 266179136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631971661) 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 7 ways as a sum of consecutive naturals, for example, 55289 + ... + 65732.

It is an arithmetic number, because the mean of its divisors is an integer number (67893342).

Almost surely, 2^631971662 is an apocalyptic number.

631971662 is a deficient number, since it is larger than the sum of its proper divisors (454321810).

631971662 is a wasteful number, since it uses less digits than its factorization.

631971662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121403.

The product of its digits is 81648, while the sum is 41.

The square root of 631971662 is about 25139.0465610771. The cubic root of 631971662 is about 858.1552588595.

The spelling of 631971662 in words is "six hundred thirty-one million, nine hundred seventy-one thousand, six hundred sixty-two".