16997975 has 6 divisors (see below), whose sum is σ = 21077520. Its totient is φ = 13598360.

The previous prime is 16997963. The next prime is 16997993. The reversal of 16997975 is 57979961.

It is not a de Polignac number, because 16997975 - 2¹⁰ = 16996951 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339935 + ... + 339984.

It is an arithmetic number, because the mean of its divisors is an integer number (3512920).

Almost surely, 2^16997975 is an apocalyptic number.

16997975 is a deficient number, since it is larger than the sum of its proper divisors (4079545).

16997975 is an equidigital number, since it uses as much as digits as its factorization.

16997975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679929 (or 679924 counting only the distinct ones).

The product of its digits is 1071630, while the sum is 53.

The square root of 16997975 is about 4122.8600509840. The cubic root of 16997975 is about 257.1179491600.

The spelling of 16997975 in words is "sixteen million, nine hundred ninety-seven thousand, nine hundred seventy-five".