16997475 has 36 divisors (see below), whose sum is σ = 30906008. Its totient is φ = 8236800.

The previous prime is 16997459. The next prime is 16997507. The reversal of 16997475 is 57479961.

It is a happy number.

It is not a de Polignac number, because 16997475 - 2⁴ = 16997459 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 8139 + ... + 10011.

Almost surely, 2^16997475 is an apocalyptic number.

16997475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16997475 is a deficient number, since it is larger than the sum of its proper divisors (13908533).

16997475 is a wasteful number, since it uses less digits than its factorization.

16997475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908 (or 1892 counting only the distinct ones).

The product of its digits is 476280, while the sum is 48.

The square root of 16997475 is about 4122.7994130202. The cubic root of 16997475 is about 257.1154280708.

The spelling of 16997475 in words is "sixteen million, nine hundred ninety-seven thousand, four hundred seventy-five".