16985071 has 2 divisors, whose sum is σ = 16985072. Its totient is φ = 16985070.

The previous prime is 16985053. The next prime is 16985081. The reversal of 16985071 is 17058961.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16985071 - 2⁷ = 16984943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16985071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16985011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8492535 + 8492536.

It is an arithmetic number, because the mean of its divisors is an integer number (8492536).

Almost surely, 2^16985071 is an apocalyptic number.

16985071 is a deficient number, since it is larger than the sum of its proper divisors (1).

16985071 is an equidigital number, since it uses as much as digits as its factorization.

16985071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 16985071 is about 4121.2948208057. The cubic root of 16985071 is about 257.0528690558.

The spelling of 16985071 in words is "sixteen million, nine hundred eighty-five thousand, seventy-one".