99999575 has 12 divisors (see below), whose sum is σ = 133538328. Its totient is φ = 73845600.

The previous prime is 99999563. The next prime is 99999587. The reversal of 99999575 is 57599999.

It is an interprime number because it is at equal distance from previous prime (99999563) and next prime (99999587).

It is not a de Polignac number, because 99999575 - 2¹⁰ = 99998551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153521 + ... + 154170.

It is an arithmetic number, because the mean of its divisors is an integer number (11128194).

Almost surely, 2^99999575 is an apocalyptic number.

99999575 is a deficient number, since it is larger than the sum of its proper divisors (33538753).

99999575 is a wasteful number, since it uses less digits than its factorization.

99999575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307714 (or 307709 counting only the distinct ones).

The product of its digits is 10333575, while the sum is 62.

The square root of 99999575 is about 9999.9787499774. The cubic root of 99999575 is about 464.1582258019.

The spelling of 99999575 in words is "ninety-nine million, nine hundred ninety-nine thousand, five hundred seventy-five".