861088 has 24 divisors (see below), whose sum is σ = 1723680. Its totient is φ = 423360.

The previous prime is 861083. The next prime is 861089. The reversal of 861088 is 880168.

It is not an unprimeable number, because it can be changed into a prime (861083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2083 + ... + 2461.

It is an arithmetic number, because the mean of its divisors is an integer number (71820).

2⁸⁶¹⁰⁸⁸ is an apocalyptic number.

It is an amenable number.

861088 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

861088 is a wasteful number, since it uses less digits than its factorization.

861088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 452 counting only the distinct ones).

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

The square root of 861088 is about 927.9482744205. The cubic root of 861088 is about 95.1369400903.

The spelling of 861088 in words is "eight hundred sixty-one thousand, eighty-eight".