99806860 has 12 divisors (see below), whose sum is σ = 209594448. Its totient is φ = 39922736.

The previous prime is 99806851. The next prime is 99806869. The reversal of 99806860 is 6860899.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99806851) and next prime (99806869).

It is a super-2 number, since 2×99806860² = 19922818606119200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99806860.

It is not an unprimeable number, because it can be changed into a prime (99806869) 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, 2495152 + ... + 2495191.

It is an arithmetic number, because the mean of its divisors is an integer number (17466204).

Almost surely, 2^99806860 is an apocalyptic number.

It is an amenable number.

99806860 is an abundant number, since it is smaller than the sum of its proper divisors (109787588).

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

99806860 is a wasteful number, since it uses less digits than its factorization.

99806860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990352 (or 4990350 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 99806860 is about 9990.3383326092. The cubic root of 99806860 is about 463.8598652816.

The spelling of 99806860 in words is "ninety-nine million, eight hundred six thousand, eight hundred sixty".