770505256 has 8 divisors (see below), whose sum is σ = 1444697370. Its totient is φ = 385252624.

The previous prime is 770505247. The next prime is 770505257. The reversal of 770505256 is 652505077.

It can be written as a sum of positive squares in only one way, i.e., 530565156 + 239940100 = 23034^2 + 15490^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (770505257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48156571 + ... + 48156586.

Almost surely, 2^770505256 is an apocalyptic number.

It is an amenable number.

770505256 is a deficient number, since it is larger than the sum of its proper divisors (674192114).

770505256 is a wasteful number, since it uses less digits than its factorization.

770505256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96313163 (or 96313159 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 37.

The square root of 770505256 is about 27757.9764392147. The cubic root of 770505256 is about 916.7660779165.

The spelling of 770505256 in words is "seven hundred seventy million, five hundred five thousand, two hundred fifty-six".