772789 has 2 divisors, whose sum is σ = 772790. Its totient is φ = 772788.

The previous prime is 772771. The next prime is 772843. The reversal of 772789 is 987277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400689 + 372100 = 633^2 + 610^2 .

It is a cyclic number.

It is not a de Polignac number, because 772789 - 2⁵ = 772757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (770789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386394 + 386395.

It is an arithmetic number, because the mean of its divisors is an integer number (386395).

2⁷⁷²⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

772789 is a deficient number, since it is larger than the sum of its proper divisors (1).

772789 is an equidigital number, since it uses as much as digits as its factorization.

772789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49392, while the sum is 40.

The square root of 772789 is about 879.0841825445. The cubic root of 772789 is about 91.7670936085.

The spelling of 772789 in words is "seven hundred seventy-two thousand, seven hundred eighty-nine".