99618255 has 80 divisors (see below), whose sum is σ = 198633600. Its totient is φ = 47355840.

The previous prime is 99618251. The next prime is 99618257. The reversal of 99618255 is 55281699.

99618255 is a `hidden beast` number, since 9 + 9 + 618 + 25 + 5 = 666.

It is not a de Polignac number, because 99618255 - 2² = 99618251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 99618255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99618251) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 262656 + ... + 263034.

It is an arithmetic number, because the mean of its divisors is an integer number (2482920).

Almost surely, 2^99618255 is an apocalyptic number.

99618255 is a deficient number, since it is larger than the sum of its proper divisors (99015345).

99618255 is a wasteful number, since it uses less digits than its factorization.

99618255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 457 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 99618255 is about 9980.8944989916. The cubic root of 99618255 is about 463.5674957477.

The spelling of 99618255 in words is "ninety-nine million, six hundred eighteen thousand, two hundred fifty-five".