770256 has 40 divisors (see below), whose sum is σ = 2212160. Its totient is φ = 256608.

The previous prime is 770239. The next prime is 770261. The reversal of 770256 is 652077.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460 + ... + 1323.

It is an arithmetic number, because the mean of its divisors is an integer number (55304).

2⁷⁷⁰²⁵⁶ is an apocalyptic number.

It is an amenable number.

770256 is an abundant number, since it is smaller than the sum of its proper divisors (1441904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

770256 is a wasteful number, since it uses less digits than its factorization.

770256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800 (or 1788 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 770256 is about 877.6422961549. The cubic root of 770256 is about 91.6667210284. Note that the first 3 decimals are identical.

The spelling of 770256 in words is "seven hundred seventy thousand, two hundred fifty-six".