99632631 has 24 divisors (see below), whose sum is σ = 163626480. Its totient is φ = 53582592.

The previous prime is 99632629. The next prime is 99632639. The reversal of 99632631 is 13623699.

It is not a de Polignac number, because 99632631 - 2¹ = 99632629 is a prime.

It is a super-2 number, since 2×99632631² = 19853322319964322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99632631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99632639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17436 + ... + 22433.

It is an arithmetic number, because the mean of its divisors is an integer number (6817770).

Almost surely, 2^99632631 is an apocalyptic number.

99632631 is a deficient number, since it is larger than the sum of its proper divisors (63993849).

99632631 is a wasteful number, since it uses less digits than its factorization.

99632631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39903 (or 39896 counting only the distinct ones).

The product of its digits is 52488, while the sum is 39.

The square root of 99632631 is about 9981.6146489433. The cubic root of 99632631 is about 463.5897939559.

The spelling of 99632631 in words is "ninety-nine million, six hundred thirty-two thousand, six hundred thirty-one".