16775997 has 16 divisors (see below), whose sum is σ = 25631232. Its totient is φ = 9560880.

The previous prime is 16775989. The next prime is 16776047. The reversal of 16775997 is 79957761.

It is not a de Polignac number, because 16775997 - 2³ = 16775989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16775197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9498 + ... + 11124.

It is an arithmetic number, because the mean of its divisors is an integer number (1601952).

Almost surely, 2^16775997 is an apocalyptic number.

It is an amenable number.

16775997 is a deficient number, since it is larger than the sum of its proper divisors (8855235).

16775997 is a wasteful number, since it uses less digits than its factorization.

16775997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128.

The product of its digits is 833490, while the sum is 51.

The square root of 16775997 is about 4095.8511935860. The cubic root of 16775997 is about 255.9937996952.

The spelling of 16775997 in words is "sixteen million, seven hundred seventy-five thousand, nine hundred ninety-seven".