99597 has 4 divisors (see below), whose sum is σ = 132800. Its totient is φ = 66396.

The previous prime is 99581. The next prime is 99607. The reversal of 99597 is 79599.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 99597 - 2⁴ = 99581 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16597 + ... + 16602.

It is an arithmetic number, because the mean of its divisors is an integer number (33200).

2⁹⁹⁵⁹⁷ is an apocalyptic number.

It is an amenable number.

99597 is a deficient number, since it is larger than the sum of its proper divisors (33203).

99597 is a wasteful number, since it uses less digits than its factorization.

99597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33202.

The product of its digits is 25515, while the sum is 39.

The square root of 99597 is about 315.5899237935. The cubic root of 99597 is about 46.3534523786.

It can be divided in two parts, 99 and 597, that added together give a palindrome (696).

The spelling of 99597 in words is "ninety-nine thousand, five hundred ninety-seven".