6680772569 has 2 divisors, whose sum is σ = 6680772570. Its totient is φ = 6680772568.

The previous prime is 6680772467. The next prime is 6680772611. The reversal of 6680772569 is 9652770866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3685946944 + 2994825625 = 60712^2 + 54725^2 .

It is a cyclic number.

It is not a de Polignac number, because 6680772569 - 2¹² = 6680768473 is a prime.

It is a super-2 number, since 2×6680772569² = 89265444237405719522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6680772169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3340386284 + 3340386285.

It is an arithmetic number, because the mean of its divisors is an integer number (3340386285).

Almost surely, 2^6680772569 is an apocalyptic number.

It is an amenable number.

6680772569 is a deficient number, since it is larger than the sum of its proper divisors (1).

6680772569 is an equidigital number, since it uses as much as digits as its factorization.

6680772569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The square root of 6680772569 is about 81735.9931058527. The cubic root of 6680772569 is about 1883.3985388724.

The spelling of 6680772569 in words is "six billion, six hundred eighty million, seven hundred seventy-two thousand, five hundred sixty-nine".