16806899 has 4 divisors (see below), whose sum is σ = 16980264. Its totient is φ = 16633536.

The previous prime is 16806877. The next prime is 16806901. The reversal of 16806899 is 99860861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16806899 - 2²⁴ = 29683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16806809) 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, 86537 + ... + 86730.

It is an arithmetic number, because the mean of its divisors is an integer number (4245066).

Almost surely, 2^16806899 is an apocalyptic number.

16806899 is a deficient number, since it is larger than the sum of its proper divisors (173365).

16806899 is an equidigital number, since it uses as much as digits as its factorization.

16806899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173364.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 16806899 is about 4099.6218118261. The cubic root of 16806899 is about 256.1508865951.

The spelling of 16806899 in words is "sixteen million, eight hundred six thousand, eight hundred ninety-nine".