16986601 has 2 divisors, whose sum is σ = 16986602. Its totient is φ = 16986600.

The previous prime is 16986559. The next prime is 16986623. The reversal of 16986601 is 10668961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15093225 + 1893376 = 3885^2 + 1376^2 .

It is a cyclic number.

It is not a de Polignac number, because 16986601 - 2¹⁷ = 16855529 is a prime.

It is a super-2 number, since 2×16986601² = 577089227066402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16986661) by changing a digit.

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 as a sum of consecutive naturals, namely, 8493300 + 8493301.

It is an arithmetic number, because the mean of its divisors is an integer number (8493301).

Almost surely, 2^16986601 is an apocalyptic number.

It is an amenable number.

16986601 is a deficient number, since it is larger than the sum of its proper divisors (1).

16986601 is an equidigital number, since it uses as much as digits as its factorization.

16986601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 16986601 is about 4121.4804379009. The cubic root of 16986601 is about 257.0605871882.

The spelling of 16986601 in words is "sixteen million, nine hundred eighty-six thousand, six hundred one".