99572687 has 4 divisors (see below), whose sum is σ = 99897336. Its totient is φ = 99248040.

The previous prime is 99572659. The next prime is 99572729. The reversal of 99572687 is 78627599.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99572687 - 2¹⁰ = 99571663 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 (99572617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161864 + ... + 162477.

It is an arithmetic number, because the mean of its divisors is an integer number (24974334).

Almost surely, 2^99572687 is an apocalyptic number.

99572687 is a deficient number, since it is larger than the sum of its proper divisors (324649).

99572687 is a wasteful number, since it uses less digits than its factorization.

99572687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324648.

The product of its digits is 1905120, while the sum is 53.

The square root of 99572687 is about 9978.6114765532. The cubic root of 99572687 is about 463.4968023280.

The spelling of 99572687 in words is "ninety-nine million, five hundred seventy-two thousand, six hundred eighty-seven".