881656 has 16 divisors (see below), whose sum is σ = 1664640. Its totient is φ = 437760.

The previous prime is 881641. The next prime is 881663. The reversal of 881656 is 656188.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240 + ... + 1816.

It is an arithmetic number, because the mean of its divisors is an integer number (104040).

2⁸⁸¹⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

881656 is a deficient number, since it is larger than the sum of its proper divisors (782984).

881656 is a wasteful number, since it uses less digits than its factorization.

881656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 770 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 881656 is about 938.9653880735. The cubic root of 881656 is about 95.8884700149. Note that the first 3 decimals are identical.

The spelling of 881656 in words is "eight hundred eighty-one thousand, six hundred fifty-six".