99680218 has 16 divisors (see below), whose sum is σ = 163500480. Its totient is φ = 45201600.

The previous prime is 99680201. The next prime is 99680239. The reversal of 99680218 is 81208699.

It is a happy number.

It is a super-2 number, since 2×99680218² = 19872291721055048, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4498 + ... + 14818.

It is an arithmetic number, because the mean of its divisors is an integer number (10218780).

Almost surely, 2^99680218 is an apocalyptic number.

99680218 is a deficient number, since it is larger than the sum of its proper divisors (63820262).

99680218 is a wasteful number, since it uses less digits than its factorization.

99680218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10773.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 99680218 is about 9983.9980969549. The cubic root of 99680218 is about 463.6635895118.

The spelling of 99680218 in words is "ninety-nine million, six hundred eighty thousand, two hundred eighteen".