16692891 has 4 divisors (see below), whose sum is σ = 22257192. Its totient is φ = 11128592.

The previous prime is 16692889. The next prime is 16692919. The reversal of 16692891 is 19829661.

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 16692891 - 2¹ = 16692889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16692821) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2782146 + ... + 2782151.

It is an arithmetic number, because the mean of its divisors is an integer number (5564298).

Almost surely, 2^16692891 is an apocalyptic number.

16692891 is a deficient number, since it is larger than the sum of its proper divisors (5564301).

16692891 is an equidigital number, since it uses as much as digits as its factorization.

16692891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5564300.

The product of its digits is 46656, while the sum is 42.

The square root of 16692891 is about 4085.6934539928. The cubic root of 16692891 is about 255.5703802854.

It can be divided in two parts, 1669 and 2891, that added together give a triangular number (4560 = T₉₅).

The spelling of 16692891 in words is "sixteen million, six hundred ninety-two thousand, eight hundred ninety-one".