99689537 has 4 divisors (see below), whose sum is σ = 99712176. Its totient is φ = 99666900.

The previous prime is 99689503. The next prime is 99689543. The reversal of 99689537 is 73598699.

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 a cyclic number.

It is not a de Polignac number, because 99689537 - 2⁸ = 99689281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99682537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2339 + ... + 14312.

It is an arithmetic number, because the mean of its divisors is an integer number (24928044).

Almost surely, 2^99689537 is an apocalyptic number.

It is an amenable number.

99689537 is a deficient number, since it is larger than the sum of its proper divisors (22639).

99689537 is a wasteful number, since it uses less digits than its factorization.

99689537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22638.

The product of its digits is 3674160, while the sum is 56.

The square root of 99689537 is about 9984.4647828514. The cubic root of 99689537 is about 463.6780382040.

The spelling of 99689537 in words is "ninety-nine million, six hundred eighty-nine thousand, five hundred thirty-seven".