16969689 has 32 divisors (see below), whose sum is σ = 29047680. Its totient is φ = 9676800.

The previous prime is 16969663. The next prime is 16969691. The reversal of 16969689 is 98696961.

It is not a de Polignac number, because 16969689 - 2⁹ = 16969177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16969619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3369 + ... + 6729.

It is an arithmetic number, because the mean of its divisors is an integer number (907740).

Almost surely, 2^16969689 is an apocalyptic number.

It is an amenable number.

16969689 is a deficient number, since it is larger than the sum of its proper divisors (12077991).

16969689 is a wasteful number, since it uses less digits than its factorization.

16969689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398 (or 3392 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 16969689 is about 4119.4282370251. The cubic root of 16969689 is about 256.9752483140.

The spelling of 16969689 in words is "sixteen million, nine hundred sixty-nine thousand, six hundred eighty-nine".