16699899 has 16 divisors (see below), whose sum is σ = 24081408. Its totient is φ = 10253952.

The previous prime is 16699897. The next prime is 16699901. The reversal of 16699899 is 99899661.

It is an interprime number because it is at equal distance from previous prime (16699897) and next prime (16699901).

It is not a de Polignac number, because 16699899 - 2¹ = 16699897 is a prime.

It is a super-2 number, since 2×16699899² = 557773253220402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16699897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1087 + ... + 5880.

It is an arithmetic number, because the mean of its divisors is an integer number (1505088).

Almost surely, 2^16699899 is an apocalyptic number.

16699899 is a deficient number, since it is larger than the sum of its proper divisors (7381509).

16699899 is a wasteful number, since it uses less digits than its factorization.

16699899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7034.

The product of its digits is 1889568, while the sum is 57.

The square root of 16699899 is about 4086.5509907500. The cubic root of 16699899 is about 255.6061397523.

The spelling of 16699899 in words is "sixteen million, six hundred ninety-nine thousand, eight hundred ninety-nine".