99604531 has 16 divisors (see below), whose sum is σ = 111404160. Its totient is φ = 88421760.

The previous prime is 99604529. The next prime is 99604537. The reversal of 99604531 is 13540699.

It is a cyclic number.

It is not a de Polignac number, because 99604531 - 2¹ = 99604529 is a prime.

It is a super-2 number, since 2×99604531² = 19842125191459922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99604537) 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 15 ways as a sum of consecutive naturals, for example, 162181 + ... + 162793.

It is an arithmetic number, because the mean of its divisors is an integer number (6962760).

Almost surely, 2^99604531 is an apocalyptic number.

99604531 is a deficient number, since it is larger than the sum of its proper divisors (11799629).

99604531 is a wasteful number, since it uses less digits than its factorization.

99604531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 99604531 is about 9980.2069617819. The cubic root of 99604531 is about 463.5462068367.

The spelling of 99604531 in words is "ninety-nine million, six hundred four thousand, five hundred thirty-one".