769865669 has 2 divisors, whose sum is σ = 769865670. Its totient is φ = 769865668.

The previous prime is 769865653. The next prime is 769865699. The reversal of 769865669 is 966568967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 587480644 + 182385025 = 24238^2 + 13505^2 .

It is a cyclic number.

It is not a de Polignac number, because 769865669 - 2⁴ = 769865653 is a prime.

It is a super-2 number, since 2×769865669² = 1185386296609635122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (769865699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384932834 + 384932835.

It is an arithmetic number, because the mean of its divisors is an integer number (384932835).

Almost surely, 2^769865669 is an apocalyptic number.

It is an amenable number.

769865669 is a deficient number, since it is larger than the sum of its proper divisors (1).

769865669 is an equidigital number, since it uses as much as digits as its factorization.

769865669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29393280, while the sum is 62.

The square root of 769865669 is about 27746.4532688414. The cubic root of 769865669 is about 916.5123422554.

The spelling of 769865669 in words is "seven hundred sixty-nine million, eight hundred sixty-five thousand, six hundred sixty-nine".