99658120 has 16 divisors (see below), whose sum is σ = 224230860. Its totient is φ = 39863232.

The previous prime is 99658109. The next prime is 99658127. The reversal of 99658120 is 2185699.

It can be written as a sum of positive squares in 2 ways, for example, as 91049764 + 8608356 = 9542^2 + 2934^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 2491453 = 99658120 / (9 + 9 + 6 + 5 + 8 + 1 + 2 + 0).

It is not an unprimeable number, because it can be changed into a prime (99658127) 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, 1245687 + ... + 1245766.

Almost surely, 2^99658120 is an apocalyptic number.

It is an amenable number.

99658120 is an abundant number, since it is smaller than the sum of its proper divisors (124572740).

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

99658120 is a wasteful number, since it uses less digits than its factorization.

99658120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491464 (or 2491460 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 99658120 is about 9982.8913647300. The cubic root of 99658120 is about 463.6293239526.

The spelling of 99658120 in words is "ninety-nine million, six hundred fifty-eight thousand, one hundred twenty".