16975945 has 32 divisors (see below), whose sum is σ = 24979968. Its totient is φ = 10810368.

The previous prime is 16975921. The next prime is 16975957. The reversal of 16975945 is 54957961.

It is not a de Polignac number, because 16975945 - 2⁵ = 16975913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16975895 and 16975904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61147 + ... + 61423.

It is an arithmetic number, because the mean of its divisors is an integer number (780624).

Almost surely, 2^16975945 is an apocalyptic number.

It is an amenable number.

16975945 is a deficient number, since it is larger than the sum of its proper divisors (8004023).

16975945 is a wasteful number, since it uses less digits than its factorization.

16975945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409.

The product of its digits is 340200, while the sum is 46.

The square root of 16975945 is about 4120.1874957337. The cubic root of 16975945 is about 257.0068230360.

The spelling of 16975945 in words is "sixteen million, nine hundred seventy-five thousand, nine hundred forty-five".