16696709 has 2 divisors, whose sum is σ = 16696710. Its totient is φ = 16696708.

The previous prime is 16696699. The next prime is 16696723. The reversal of 16696709 is 90769661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10336225 + 6360484 = 3215^2 + 2522^2 .

It is a cyclic number.

It is not a de Polignac number, because 16696709 - 2⁸ = 16696453 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16696709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16696769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8348354 + 8348355.

It is an arithmetic number, because the mean of its divisors is an integer number (8348355).

Almost surely, 2^16696709 is an apocalyptic number.

It is an amenable number.

16696709 is a deficient number, since it is larger than the sum of its proper divisors (1).

16696709 is an equidigital number, since it uses as much as digits as its factorization.

16696709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 16696709 is about 4086.1606674236. The cubic root of 16696709 is about 255.5898634959.

The spelling of 16696709 in words is "sixteen million, six hundred ninety-six thousand, seven hundred nine".