99365631 has 8 divisors (see below), whose sum is σ = 132576384. Its totient is φ = 66199320.

The previous prime is 99365627. The next prime is 99365659. The reversal of 99365631 is 13656399.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99365631 - 2² = 99365627 is a prime.

It is a super-2 number, since 2×99365631² = 19747057248056322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99365621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5485 + ... + 15126.

It is an arithmetic number, because the mean of its divisors is an integer number (16572048).

Almost surely, 2^99365631 is an apocalyptic number.

99365631 is a deficient number, since it is larger than the sum of its proper divisors (33210753).

99365631 is a wasteful number, since it uses less digits than its factorization.

99365631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22221.

The product of its digits is 131220, while the sum is 42.

The square root of 99365631 is about 9968.2310868077. The cubic root of 99365631 is about 463.1753072304.

The spelling of 99365631 in words is "ninety-nine million, three hundred sixty-five thousand, six hundred thirty-one".