16690169 has 4 divisors (see below), whose sum is σ = 16939344. Its totient is φ = 16440996.

The previous prime is 16690133. The next prime is 16690211. The reversal of 16690169 is 96109661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16690169 - 2⁸ = 16689913 is a prime.

It is a super-2 number, since 2×16690169² = 557123482497122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16690129) 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, 124487 + ... + 124620.

It is an arithmetic number, because the mean of its divisors is an integer number (4234836).

Almost surely, 2^16690169 is an apocalyptic number.

It is an amenable number.

16690169 is a deficient number, since it is larger than the sum of its proper divisors (249175).

16690169 is an equidigital number, since it uses as much as digits as its factorization.

16690169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249174.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 16690169 is about 4085.3603268255. The cubic root of 16690169 is about 255.5564881363.

The spelling of 16690169 in words is "sixteen million, six hundred ninety thousand, one hundred sixty-nine".