16906717 has 2 divisors, whose sum is σ = 16906718. Its totient is φ = 16906716.

The previous prime is 16906691. The next prime is 16906723. The reversal of 16906717 is 71760961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14907321 + 1999396 = 3861^2 + 1414^2 .

It is a cyclic number.

It is not a de Polignac number, because 16906717 - 2¹⁵ = 16873949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16906777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8453358 + 8453359.

It is an arithmetic number, because the mean of its divisors is an integer number (8453359).

Almost surely, 2^16906717 is an apocalyptic number.

It is an amenable number.

16906717 is a deficient number, since it is larger than the sum of its proper divisors (1).

16906717 is an equidigital number, since it uses as much as digits as its factorization.

16906717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 16906717 is about 4111.7778393294. Note that the first 3 decimals coincide. The cubic root of 16906717 is about 256.6569886345.

The spelling of 16906717 in words is "sixteen million, nine hundred six thousand, seven hundred seventeen".