860881 has 6 divisors (see below), whose sum is σ = 1001490. Its totient is φ = 737856.

The previous prime is 860861. The next prime is 860887. The reversal of 860881 is 188068.

It can be written as a sum of positive squares in only one way, i.e., 490000 + 370881 = 700^2 + 609^2 .

It is not a de Polignac number, because 860881 - 2⁷ = 860753 is a prime.

It is a super-2 number, since 2×860881² = 1482232192322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (860887) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8736 + ... + 8833.

It is an arithmetic number, because the mean of its divisors is an integer number (166915).

2⁸⁶⁰⁸⁸¹ is an apocalyptic number.

It is an amenable number.

860881 is a deficient number, since it is larger than the sum of its proper divisors (140609).

860881 is a wasteful number, since it uses less digits than its factorization.

860881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17583 (or 17576 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 860881 is about 927.8367313272. The cubic root of 860881 is about 95.1293160438.

The spelling of 860881 in words is "eight hundred sixty thousand, eight hundred eighty-one".