772816501 has 2 divisors, whose sum is σ = 772816502. Its totient is φ = 772816500.

The previous prime is 772816439. The next prime is 772816523. The reversal of 772816501 is 105618277.

772816501 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., 427414276 + 345402225 = 20674^2 + 18585^2 .

It is a cyclic number.

It is not a de Polignac number, because 772816501 - 2¹⁵ = 772783733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (772816531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386408250 + 386408251.

It is an arithmetic number, because the mean of its divisors is an integer number (386408251).

Almost surely, 2^772816501 is an apocalyptic number.

It is an amenable number.

772816501 is a deficient number, since it is larger than the sum of its proper divisors (1).

772816501 is an equidigital number, since it uses as much as digits as its factorization.

772816501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 772816501 is about 27799.5773529023. The cubic root of 772816501 is about 917.6818215786.

The spelling of 772816501 in words is "seven hundred seventy-two million, eight hundred sixteen thousand, five hundred one".