99562878 has 16 divisors (see below), whose sum is σ = 221250960. Its totient is φ = 33187608.

The previous prime is 99562877. The next prime is 99562891. The reversal of 99562878 is 87826599.

It is a happy number.

99562878 is a `hidden beast` number, since 9 + 9 + 5 + 628 + 7 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1843757 = 99562878 / (9 + 9 + 5 + 6 + 2 + 8 + 7 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99562877) 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 7 ways as a sum of consecutive naturals, for example, 921825 + ... + 921932.

It is an arithmetic number, because the mean of its divisors is an integer number (13828185).

Almost surely, 2^99562878 is an apocalyptic number.

99562878 is an abundant number, since it is smaller than the sum of its proper divisors (121688082).

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

99562878 is a wasteful number, since it uses less digits than its factorization.

99562878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843768 (or 1843762 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 99562878 is about 9978.1199631995. The cubic root of 99562878 is about 463.4815819914.

The spelling of 99562878 in words is "ninety-nine million, five hundred sixty-two thousand, eight hundred seventy-eight".