256770696 has 128 divisors (see below), whose sum is σ = 799545600. Its totient is φ = 66908160.

The previous prime is 256770623. The next prime is 256770697. The reversal of 256770696 is 696077652.

It is not an unprimeable number, because it can be changed into a prime (256770697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193716 + ... + 195036.

It is an arithmetic number, because the mean of its divisors is an integer number (6246450).

Almost surely, 2^256770696 is an apocalyptic number.

256770696 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256770696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399772800).

256770696 is an abundant number, since it is smaller than the sum of its proper divisors (542774904).

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

256770696 is a wasteful number, since it uses less digits than its factorization.

256770696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439 (or 1435 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 48.

The square root of 256770696 is about 16024.0661506373. The cubic root of 256770696 is about 635.5969718248.

The spelling of 256770696 in words is "two hundred fifty-six million, seven hundred seventy thousand, six hundred ninety-six".