99218620 has 12 divisors (see below), whose sum is σ = 208359144. Its totient is φ = 39687440.

The previous prime is 99218611. The next prime is 99218621. The reversal of 99218620 is 2681299.

It is a self number, because there is not a number n which added to its sum of digits gives 99218620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99218621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2480446 + ... + 2480485.

It is an arithmetic number, because the mean of its divisors is an integer number (17363262).

Almost surely, 2^99218620 is an apocalyptic number.

It is an amenable number.

99218620 is an abundant number, since it is smaller than the sum of its proper divisors (109140524).

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

99218620 is a wasteful number, since it uses less digits than its factorization.

99218620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960940 (or 4960938 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 99218620 is about 9960.8543810258. The cubic root of 99218620 is about 462.9467725665.

The spelling of 99218620 in words is "ninety-nine million, two hundred eighteen thousand, six hundred twenty".