16897969 has 8 divisors (see below), whose sum is σ = 18472608. Its totient is φ = 15329760.

The previous prime is 16897963. The next prime is 16897987. The reversal of 16897969 is 96979861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16897969 - 2⁷ = 16897841 is a prime.

It is a super-2 number, since 2×16897969² = 571082712649922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16897963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5149 + ... + 7765.

It is an arithmetic number, because the mean of its divisors is an integer number (2309076).

Almost surely, 2^16897969 is an apocalyptic number.

It is an amenable number.

16897969 is a deficient number, since it is larger than the sum of its proper divisors (1574639).

16897969 is a wasteful number, since it uses less digits than its factorization.

16897969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215.

The product of its digits is 1469664, while the sum is 55.

The square root of 16897969 is about 4110.7139282611. The cubic root of 16897969 is about 256.6127138709.

The spelling of 16897969 in words is "sixteen million, eight hundred ninety-seven thousand, nine hundred sixty-nine".