99864075 has 12 divisors (see below), whose sum is σ = 165108728. Its totient is φ = 53260800.

The previous prime is 99864071. The next prime is 99864101. The reversal of 99864075 is 57046899.

It is not a de Polignac number, because 99864075 - 2² = 99864071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99864071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 665686 + ... + 665835.

Almost surely, 2^99864075 is an apocalyptic number.

99864075 is a deficient number, since it is larger than the sum of its proper divisors (65244653).

99864075 is a wasteful number, since it uses less digits than its factorization.

99864075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331534 (or 1331529 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 99864075 is about 9993.2014389784. The cubic root of 99864075 is about 463.9484853506.

The spelling of 99864075 in words is "ninety-nine million, eight hundred sixty-four thousand, seventy-five".