16856701 has 2 divisors, whose sum is σ = 16856702. Its totient is φ = 16856700.

The previous prime is 16856683. The next prime is 16856717. The reversal of 16856701 is 10765861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16208676 + 648025 = 4026^2 + 805^2 .

It is an emirp because it is prime and its reverse (10765861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16856701 - 2⁷ = 16856573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16856761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8428350 + 8428351.

It is an arithmetic number, because the mean of its divisors is an integer number (8428351).

Almost surely, 2^16856701 is an apocalyptic number.

It is an amenable number.

16856701 is a deficient number, since it is larger than the sum of its proper divisors (1).

16856701 is an equidigital number, since it uses as much as digits as its factorization.

16856701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 16856701 is about 4105.6912938018. The cubic root of 16856701 is about 256.4036448397.

The spelling of 16856701 in words is "sixteen million, eight hundred fifty-six thousand, seven hundred one".