632871139666 has 16 divisors (see below), whose sum is σ = 1005163086744. Its totient is φ = 297817325824.

The previous prime is 632871139651. The next prime is 632871139687. The reversal of 632871139666 is 666931178236.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 626505493441 + 6365646225 = 791521^2 + 79785^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 632871139666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4128936 + ... + 4279468.

Almost surely, 2^632871139666 is an apocalyptic number.

632871139666 is a deficient number, since it is larger than the sum of its proper divisors (372291947078).

632871139666 is a wasteful number, since it uses less digits than its factorization.

632871139666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274205.

The product of its digits is 11757312, while the sum is 58.

The spelling of 632871139666 in words is "six hundred thirty-two billion, eight hundred seventy-one million, one hundred thirty-nine thousand, six hundred sixty-six".