99632691 has 6 divisors (see below), whose sum is σ = 143913900. Its totient is φ = 66421788.

The previous prime is 99632683. The next prime is 99632707. The reversal of 99632691 is 19623699.

It is a happy number.

99632691 is a `hidden beast` number, since 9 + 9 + 632 + 6 + 9 + 1 = 666.

It is not a de Polignac number, because 99632691 - 2³ = 99632683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99632641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5535141 + ... + 5535158.

It is an arithmetic number, because the mean of its divisors is an integer number (23985650).

Almost surely, 2^99632691 is an apocalyptic number.

99632691 is a deficient number, since it is larger than the sum of its proper divisors (44281209).

99632691 is a wasteful number, since it uses less digits than its factorization.

99632691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11070305 (or 11070302 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 99632691 is about 9981.6176544686. The cubic root of 99632691 is about 463.5898870157.

The spelling of 99632691 in words is "ninety-nine million, six hundred thirty-two thousand, six hundred ninety-one".