7716689 has 2 divisors, whose sum is σ = 7716690. Its totient is φ = 7716688.

The previous prime is 7716673. The next prime is 7716701. The reversal of 7716689 is 9866177.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5798464 + 1918225 = 2408^2 + 1385^2 .

It is a cyclic number.

It is not a de Polignac number, because 7716689 - 2⁴ = 7716673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7716619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3858344 + 3858345.

It is an arithmetic number, because the mean of its divisors is an integer number (3858345).

Almost surely, 2^7716689 is an apocalyptic number.

It is an amenable number.

7716689 is a deficient number, since it is larger than the sum of its proper divisors (1).

7716689 is an equidigital number, since it uses as much as digits as its factorization.

7716689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 44.

The square root of 7716689 is about 2777.8929065031. The cubic root of 7716689 is about 197.6106435530.

The spelling of 7716689 in words is "seven million, seven hundred sixteen thousand, six hundred eighty-nine".