885981 has 8 divisors (see below), whose sum is σ = 1187424. Its totient is φ = 587600.

The previous prime is 885977. The next prime is 885991. The reversal of 885981 is 189588.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 885981 - 2² = 885977 is a prime.

It is a super-2 number, since 2×885981² = 1569924664722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (885931) 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 7 ways as a sum of consecutive naturals, for example, 31 + ... + 1331.

It is an arithmetic number, because the mean of its divisors is an integer number (148428).

2⁸⁸⁵⁹⁸¹ is an apocalyptic number.

It is an amenable number.

885981 is a deficient number, since it is larger than the sum of its proper divisors (301443).

885981 is a wasteful number, since it uses less digits than its factorization.

885981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531.

The product of its digits is 23040, while the sum is 39.

The square root of 885981 is about 941.2656373203. The cubic root of 885981 is about 96.0450092762.

The spelling of 885981 in words is "eight hundred eighty-five thousand, nine hundred eighty-one".