99559678 has 4 divisors (see below), whose sum is σ = 149339520. Its totient is φ = 49779838.

The previous prime is 99559657. The next prime is 99559687. The reversal of 99559678 is 87695599.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24889918 + ... + 24889921.

It is an arithmetic number, because the mean of its divisors is an integer number (37334880).

Almost surely, 2^99559678 is an apocalyptic number.

99559678 is a deficient number, since it is larger than the sum of its proper divisors (49779842).

99559678 is a wasteful number, since it uses less digits than its factorization.

99559678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49779841.

The product of its digits is 6123600, while the sum is 58.

The square root of 99559678 is about 9977.9596110628. The cubic root of 99559678 is about 463.4766164293.

The spelling of 99559678 in words is "ninety-nine million, five hundred fifty-nine thousand, six hundred seventy-eight".