16997775 has 12 divisors (see below), whose sum is σ = 28103112. Its totient is φ = 9065440.

The previous prime is 16997767. The next prime is 16997779. The reversal of 16997775 is 57779961.

It is not a de Polignac number, because 16997775 - 2³ = 16997767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16997779) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 113244 + ... + 113393.

It is an arithmetic number, because the mean of its divisors is an integer number (2341926).

Almost surely, 2^16997775 is an apocalyptic number.

16997775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16997775 is a deficient number, since it is larger than the sum of its proper divisors (11105337).

16997775 is a wasteful number, since it uses less digits than its factorization.

16997775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226650 (or 226645 counting only the distinct ones).

The product of its digits is 833490, while the sum is 51.

The square root of 16997775 is about 4122.8357959055. The cubic root of 16997775 is about 257.1169407302.

The spelling of 16997775 in words is "sixteen million, nine hundred ninety-seven thousand, seven hundred seventy-five".