99975678 has 16 divisors (see below), whose sum is σ = 218128896. Its totient is φ = 30295640.

The previous prime is 99975661. The next prime is 99975679. The reversal of 99975678 is 87657999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99975679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757326 + ... + 757457.

It is an arithmetic number, because the mean of its divisors is an integer number (13633056).

Almost surely, 2^99975678 is an apocalyptic number.

99975678 is an abundant number, since it is smaller than the sum of its proper divisors (118153218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99975678 is a wasteful number, since it uses less digits than its factorization.

99975678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514799.

The product of its digits is 8573040, while the sum is 60.

The square root of 99975678 is about 9998.7838260460. The cubic root of 99975678 is about 464.1212494021.

The spelling of 99975678 in words is "ninety-nine million, nine hundred seventy-five thousand, six hundred seventy-eight".