16997937 has 8 divisors (see below), whose sum is σ = 24724320. Its totient is φ = 10301760.

The previous prime is 16997921. The next prime is 16997947. The reversal of 16997937 is 73979961.

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

It is not a de Polignac number, because 16997937 - 2⁴ = 16997921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16997937.

It is not an unprimeable number, because it can be changed into a prime (16997917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257512 + ... + 257577.

It is an arithmetic number, because the mean of its divisors is an integer number (3090540).

Almost surely, 2^16997937 is an apocalyptic number.

It is an amenable number.

16997937 is a deficient number, since it is larger than the sum of its proper divisors (7726383).

16997937 is a wasteful number, since it uses less digits than its factorization.

16997937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515103.

The product of its digits is 642978, while the sum is 51.

The square root of 16997937 is about 4122.8554425301. The cubic root of 16997937 is about 257.1177575589.

The spelling of 16997937 in words is "sixteen million, nine hundred ninety-seven thousand, nine hundred thirty-seven".