772699969 has 2 divisors, whose sum is σ = 772699970. Its totient is φ = 772699968.

The previous prime is 772699951. The next prime is 772699979. The reversal of 772699969 is 969996277.

772699969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 712249344 + 60450625 = 26688^2 + 7775^2 .

It is a cyclic number.

It is not a de Polignac number, because 772699969 - 2⁵ = 772699937 is a prime.

It is a super-2 number, since 2×772699969² = 1194130484185201922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 772699969.

It is not a weakly prime, because it can be changed into another prime (772699909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386349984 + 386349985.

It is an arithmetic number, because the mean of its divisors is an integer number (386349985).

Almost surely, 2^772699969 is an apocalyptic number.

It is an amenable number.

772699969 is a deficient number, since it is larger than the sum of its proper divisors (1).

772699969 is an equidigital number, since it uses as much as digits as its factorization.

772699969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23147208, while the sum is 64.

The square root of 772699969 is about 27797.4813427404. The cubic root of 772699969 is about 917.6356939087.

The spelling of 772699969 in words is "seven hundred seventy-two million, six hundred ninety-nine thousand, nine hundred sixty-nine".