16930997 has 4 divisors (see below), whose sum is σ = 17926956. Its totient is φ = 15935040.

The previous prime is 16930993. The next prime is 16931011. The reversal of 16930997 is 79903961.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4813636 + 12117361 = 2194^2 + 3481^2 .

It is a cyclic number.

It is not a de Polignac number, because 16930997 - 2² = 16930993 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 (16930993) 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, 497954 + ... + 497987.

It is an arithmetic number, because the mean of its divisors is an integer number (4481739).

Almost surely, 2^16930997 is an apocalyptic number.

16930997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16930997 is a deficient number, since it is larger than the sum of its proper divisors (995959).

16930997 is an equidigital number, since it uses as much as digits as its factorization.

16930997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995958.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 16930997 is about 4114.7292742050. The cubic root of 16930997 is about 256.7797929012.

The spelling of 16930997 in words is "sixteen million, nine hundred thirty thousand, nine hundred ninety-seven".