16690855 has 16 divisors (see below), whose sum is σ = 21345120. Its totient is φ = 12485632.

The previous prime is 16690829. The next prime is 16690897. The reversal of 16690855 is 55809661.

It is a cyclic number.

It is not a de Polignac number, because 16690855 - 2⁹ = 16690343 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 14667 + ... + 15763.

It is an arithmetic number, because the mean of its divisors is an integer number (1334070).

Almost surely, 2^16690855 is an apocalyptic number.

16690855 is a deficient number, since it is larger than the sum of its proper divisors (4654265).

16690855 is a wasteful number, since it uses less digits than its factorization.

16690855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 16690855 is about 4085.4442842854. Note that the first 3 decimals coincide. The cubic root of 16690855 is about 255.5599893861.

The spelling of 16690855 in words is "sixteen million, six hundred ninety thousand, eight hundred fifty-five".