861883 has 12 divisors (see below), whose sum is σ = 1005480. Its totient is φ = 735680.

The previous prime is 861881. The next prime is 861899. The reversal of 861883 is 388168.

It is not a de Polignac number, because 861883 - 2¹ = 861881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1848 + ... + 2266.

It is an arithmetic number, because the mean of its divisors is an integer number (83790).

2⁸⁶¹⁸⁸³ is an apocalyptic number.

861883 is a deficient number, since it is larger than the sum of its proper divisors (143597).

861883 is a wasteful number, since it uses less digits than its factorization.

861883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 447 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 861883 is about 928.3765399880. The cubic root of 861883 is about 95.1662094963.

The spelling of 861883 in words is "eight hundred sixty-one thousand, eight hundred eighty-three".