99815806 has 16 divisors (see below), whose sum is σ = 160018416. Its totient is φ = 46531456.

The previous prime is 99815803. The next prime is 99815839. The reversal of 99815806 is 60851899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99815803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10081 + ... + 17356.

It is an arithmetic number, because the mean of its divisors is an integer number (10001151).

Almost surely, 2^99815806 is an apocalyptic number.

99815806 is a deficient number, since it is larger than the sum of its proper divisors (60202610).

99815806 is a wasteful number, since it uses less digits than its factorization.

99815806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27563.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 99815806 is about 9990.7860551610. The cubic root of 99815806 is about 463.8737239362.

The spelling of 99815806 in words is "ninety-nine million, eight hundred fifteen thousand, eight hundred six".