99904687608 has 32 divisors (see below), whose sum is σ = 272467330560. Its totient is φ = 30274147680.

The previous prime is 99904687579. The next prime is 99904687609. The reversal of 99904687608 is 80678640999.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99904687609) 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, 189213160 + ... + 189213687.

It is an arithmetic number, because the mean of its divisors is an integer number (8514604080).

Almost surely, 2^99904687608 is an apocalyptic number.

It is an amenable number.

99904687608 is an abundant number, since it is smaller than the sum of its proper divisors (172562642952).

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

99904687608 is a wasteful number, since it uses less digits than its factorization.

99904687608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378426867 (or 378426863 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 66.

The spelling of 99904687608 in words is "ninety-nine billion, nine hundred four million, six hundred eighty-seven thousand, six hundred eight".