99678711 has 24 divisors (see below), whose sum is σ = 152449920. Its totient is φ = 57779920.

The previous prime is 99678679. The next prime is 99678751. The reversal of 99678711 is 11787699.

It is a happy number.

It is not a de Polignac number, because 99678711 - 2⁵ = 99678679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99678751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2380 + ... + 14318.

It is an arithmetic number, because the mean of its divisors is an integer number (6352080).

Almost surely, 2^99678711 is an apocalyptic number.

99678711 is a deficient number, since it is larger than the sum of its proper divisors (52771209).

99678711 is a wasteful number, since it uses less digits than its factorization.

99678711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11987 (or 11976 counting only the distinct ones).

The product of its digits is 190512, while the sum is 48.

The square root of 99678711 is about 9983.9226259021. The cubic root of 99678711 is about 463.6612528912.

The spelling of 99678711 in words is "ninety-nine million, six hundred seventy-eight thousand, seven hundred eleven".