99570870 has 160 divisors (see below), whose sum is σ = 324295488. Its totient is φ = 21399552.

The previous prime is 99570869. The next prime is 99570881. The reversal of 99570870 is 7807599.

99570870 is a `hidden beast` number, since 9 + 9 + 570 + 8 + 70 = 666.

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

It is a congruent number.

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 95874 + ... + 96906.

Almost surely, 2^99570870 is an apocalyptic number.

99570870 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 99570870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162147744).

99570870 is an abundant number, since it is smaller than the sum of its proper divisors (224724618).

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

99570870 is a wasteful number, since it uses less digits than its factorization.

99570870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 99570870 is about 9978.5204314067. The cubic root of 99570870 is about 463.4939830180.

The spelling of 99570870 in words is "ninety-nine million, five hundred seventy thousand, eight hundred seventy".