770256985 has 4 divisors (see below), whose sum is σ = 924308388. Its totient is φ = 616205584.

The previous prime is 770256953. The next prime is 770257039. The reversal of 770256985 is 589652077.

770256985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 574704729 + 195552256 = 23973^2 + 13984^2 .

It is a cyclic number.

It is not a de Polignac number, because 770256985 - 2⁵ = 770256953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77025694 + ... + 77025703.

It is an arithmetic number, because the mean of its divisors is an integer number (231077097).

Almost surely, 2^770256985 is an apocalyptic number.

It is an amenable number.

770256985 is a deficient number, since it is larger than the sum of its proper divisors (154051403).

770256985 is a wasteful number, since it uses less digits than its factorization.

770256985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154051402.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The square root of 770256985 is about 27753.5040130071. The cubic root of 770256985 is about 916.6676010275.

The spelling of 770256985 in words is "seven hundred seventy million, two hundred fifty-six thousand, nine hundred eighty-five".