99168580 has 24 divisors (see below), whose sum is σ = 238004928. Its totient is φ = 34000608.

The previous prime is 99168551. The next prime is 99168583. The reversal of 99168580 is 8586199.

It is a self number, because there is not a number n which added to its sum of digits gives 99168580.

It is not an unprimeable number, because it can be changed into a prime (99168583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354034 + ... + 354313.

It is an arithmetic number, because the mean of its divisors is an integer number (9916872).

Almost surely, 2^99168580 is an apocalyptic number.

It is an amenable number.

99168580 is an abundant number, since it is smaller than the sum of its proper divisors (138836348).

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

99168580 is a wasteful number, since it uses less digits than its factorization.

99168580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708363 (or 708361 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 99168580 is about 9958.3422315162. The cubic root of 99168580 is about 462.8689318275.

It can be divided in two parts, 9916 and 8580, that added together give a square (18496 = 136²).

The spelling of 99168580 in words is "ninety-nine million, one hundred sixty-eight thousand, five hundred eighty".