99632261 has 4 divisors (see below), whose sum is σ = 99811692. Its totient is φ = 99452832.

The previous prime is 99632237. The next prime is 99632263. The reversal of 99632261 is 16223699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16223699 = 2389 ⋅6791.

It can be written as a sum of positive squares in 2 ways, for example, as 6220036 + 93412225 = 2494^2 + 9665^2 .

It is a cyclic number.

It is not a de Polignac number, because 99632261 - 2²² = 95437957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99632263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88880 + ... + 89993.

It is an arithmetic number, because the mean of its divisors is an integer number (24952923).

Almost surely, 2^99632261 is an apocalyptic number.

It is an amenable number.

99632261 is a deficient number, since it is larger than the sum of its proper divisors (179431).

99632261 is a wasteful number, since it uses less digits than its factorization.

99632261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179430.

The product of its digits is 34992, while the sum is 38.

The square root of 99632261 is about 9981.5961148506. The cubic root of 99632261 is about 463.5892200862.

The spelling of 99632261 in words is "ninety-nine million, six hundred thirty-two thousand, two hundred sixty-one".