99768812 has 36 divisors (see below), whose sum is σ = 206261496. Its totient is φ = 41857920.

The previous prime is 99768811. The next prime is 99768817. The reversal of 99768812 is 21886799.

It is not an unprimeable number, because it can be changed into a prime (99768811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 728 + ... + 14144.

It is an arithmetic number, because the mean of its divisors is an integer number (5729486).

Almost surely, 2^99768812 is an apocalyptic number.

It is an amenable number.

99768812 is an abundant number, since it is smaller than the sum of its proper divisors (106492684).

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

99768812 is a wasteful number, since it uses less digits than its factorization.

99768812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13458 (or 13443 counting only the distinct ones).

The product of its digits is 435456, while the sum is 50.

The square root of 99768812 is about 9988.4339112796. The cubic root of 99768812 is about 463.8009141457.

The spelling of 99768812 in words is "ninety-nine million, seven hundred sixty-eight thousand, eight hundred twelve".