16697943 has 6 divisors (see below), whose sum is σ = 24119264. Its totient is φ = 11131956.

The previous prime is 16697929. The next prime is 16697951. The reversal of 16697943 is 34979661.

It is not a de Polignac number, because 16697943 - 2⁵ = 16697911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16697543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 927655 + ... + 927672.

Almost surely, 2^16697943 is an apocalyptic number.

16697943 is a deficient number, since it is larger than the sum of its proper divisors (7421321).

16697943 is a wasteful number, since it uses less digits than its factorization.

16697943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855333 (or 1855330 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 16697943 is about 4086.3116621227. The cubic root of 16697943 is about 255.5961599488.

The spelling of 16697943 in words is "sixteen million, six hundred ninety-seven thousand, nine hundred forty-three".