99631368 has 24 divisors (see below), whose sum is σ = 269835150. Its totient is φ = 33210432.

The previous prime is 99631333. The next prime is 99631379. The reversal of 99631368 is 86313699.

99631368 is a `hidden beast` number, since 9 + 9 + 631 + 3 + 6 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 95296644 + 4334724 = 9762^2 + 2082^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 691813 + ... + 691956.

Almost surely, 2^99631368 is an apocalyptic number.

It is an amenable number.

99631368 is an abundant number, since it is smaller than the sum of its proper divisors (170203782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99631368 is a wasteful number, since it uses less digits than its factorization.

99631368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383781 (or 1383774 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 99631368 is about 9981.5513824255. The cubic root of 99631368 is about 463.5878350381.

It can be divided in two parts, 99631 and 368, that added together give a palindrome (99999).

The spelling of 99631368 in words is "ninety-nine million, six hundred thirty-one thousand, three hundred sixty-eight".