99570810 has 32 divisors (see below), whose sum is σ = 242000640. Its totient is φ = 26215488.

The previous prime is 99570799. The next prime is 99570817. The reversal of 99570810 is 1807599.

It is a happy number.

It is a super-2 number, since 2×99570810² = 19828692408112200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99570817) 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 15 ways as a sum of consecutive naturals, for example, 18637 + ... + 23376.

It is an arithmetic number, because the mean of its divisors is an integer number (7562520).

Almost surely, 2^99570810 is an apocalyptic number.

99570810 is an abundant number, since it is smaller than the sum of its proper divisors (142429830).

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

99570810 is a wasteful number, since it uses less digits than its factorization.

99570810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42102.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 99570810 is about 9978.5174249485. The cubic root of 99570810 is about 463.4938899197.

The spelling of 99570810 in words is "ninety-nine million, five hundred seventy thousand, eight hundred ten".