16986769 has 2 divisors, whose sum is σ = 16986770. Its totient is φ = 16986768.

The previous prime is 16986733. The next prime is 16986797. The reversal of 16986769 is 96768961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13046544 + 3940225 = 3612^2 + 1985^2 .

It is a cyclic number.

It is not a de Polignac number, because 16986769 - 2¹⁵ = 16954001 is a prime.

It is a super-2 number, since 2×16986769² = 577100642118722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16986709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8493384 + 8493385.

It is an arithmetic number, because the mean of its divisors is an integer number (8493385).

Almost surely, 2^16986769 is an apocalyptic number.

It is an amenable number.

16986769 is a deficient number, since it is larger than the sum of its proper divisors (1).

16986769 is an equidigital number, since it uses as much as digits as its factorization.

16986769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 52.

The square root of 16986769 is about 4121.5008188765. The cubic root of 16986769 is about 257.0614346412.

The spelling of 16986769 in words is "sixteen million, nine hundred eighty-six thousand, seven hundred sixty-nine".