772793081 has 2 divisors, whose sum is σ = 772793082. Its totient is φ = 772793080.

The previous prime is 772793071. The next prime is 772793149. The reversal of 772793081 is 180397277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 735277456 + 37515625 = 27116^2 + 6125^2 .

It is a cyclic number.

It is not a de Polignac number, because 772793081 - 2¹⁰ = 772792057 is a prime.

It is a super-2 number, since 2×772793081² = 1194418292082945122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (772793011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386396540 + 386396541.

It is an arithmetic number, because the mean of its divisors is an integer number (386396541).

Almost surely, 2^772793081 is an apocalyptic number.

It is an amenable number.

772793081 is a deficient number, since it is larger than the sum of its proper divisors (1).

772793081 is an equidigital number, since it uses as much as digits as its factorization.

772793081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 772793081 is about 27799.1561202854. The cubic root of 772793081 is about 917.6725514499.

The spelling of 772793081 in words is "seven hundred seventy-two million, seven hundred ninety-three thousand, eighty-one".