16870717 has 2 divisors, whose sum is σ = 16870718. Its totient is φ = 16870716.

The previous prime is 16870699. The next prime is 16870741. The reversal of 16870717 is 71707861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14243076 + 2627641 = 3774^2 + 1621^2 .

It is an emirp because it is prime and its reverse (71707861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16870717 - 2¹¹ = 16868669 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16870757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8435358 + 8435359.

It is an arithmetic number, because the mean of its divisors is an integer number (8435359).

Almost surely, 2^16870717 is an apocalyptic number.

It is an amenable number.

16870717 is a deficient number, since it is larger than the sum of its proper divisors (1).

16870717 is an equidigital number, since it uses as much as digits as its factorization.

16870717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16464, while the sum is 37.

The square root of 16870717 is about 4107.3978380478. The cubic root of 16870717 is about 256.4746899373.

The spelling of 16870717 in words is "sixteen million, eight hundred seventy thousand, seven hundred seventeen".