99668780 has 12 divisors (see below), whose sum is σ = 209304480. Its totient is φ = 39867504.

The previous prime is 99668771. The next prime is 99668783. The reversal of 99668780 is 8786699.

It is not an unprimeable number, because it can be changed into a prime (99668783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2491700 + ... + 2491739.

It is an arithmetic number, because the mean of its divisors is an integer number (17442040).

Almost surely, 2^99668780 is an apocalyptic number.

It is an amenable number.

99668780 is an abundant number, since it is smaller than the sum of its proper divisors (109635700).

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

99668780 is a wasteful number, since it uses less digits than its factorization.

99668780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4983448 (or 4983446 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 99668780 is about 9983.4252639062. The cubic root of 99668780 is about 463.6458541741.

The spelling of 99668780 in words is "ninety-nine million, six hundred sixty-eight thousand, seven hundred eighty".