881766 has 20 divisors (see below), whose sum is σ = 1976172. Its totient is φ = 293868.

The previous prime is 881743. The next prime is 881779. The reversal of 881766 is 667188.

It is a super-2 number, since 2×881766² = 1555022557512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 881766.

It is a congruent number.

It is an unprimeable number.

881766 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 9 ways as a sum of consecutive naturals, for example, 2560 + ... + 2883.

2⁸⁸¹⁷⁶⁶ is an apocalyptic number.

881766 is an abundant number, since it is smaller than the sum of its proper divisors (1094406).

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

881766 is a wasteful number, since it uses less digits than its factorization.

881766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5457 (or 5448 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 881766 is about 939.0239613556. The cubic root of 881766 is about 95.8924576976.

The spelling of 881766 in words is "eight hundred eighty-one thousand, seven hundred sixty-six".