842656 has 24 divisors (see below), whose sum is σ = 1757700. Its totient is φ = 396288.

The previous prime is 842627. The next prime is 842657. The reversal of 842656 is 656248.

842656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 839056 + 3600 = 916^2 + 60^2 .

It is not an unprimeable number, because it can be changed into a prime (842657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231 + ... + 1318.

2⁸⁴²⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

842656 is an abundant number, since it is smaller than the sum of its proper divisors (915044).

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

842656 is a wasteful number, since it uses less digits than its factorization.

842656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576 (or 1568 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 842656 is about 917.9629622158. The cubic root of 842656 is about 94.4532209709.

The spelling of 842656 in words is "eight hundred forty-two thousand, six hundred fifty-six".