1085868 has 72 divisors (see below), whose sum is σ = 3261440. Its totient is φ = 298080.

The previous prime is 1085867. The next prime is 1085873. The reversal of 1085868 is 8685801.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1085863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7743 + ... + 7881.

2^1085868 is an apocalyptic number.

1085868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1085868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1630720).

1085868 is an abundant number, since it is smaller than the sum of its proper divisors (2175572).

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

1085868 is a wasteful number, since it uses less digits than its factorization.

1085868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 1085868 is about 1042.0499028358. The cubic root of 1085868 is about 102.7840386630.

It can be divided in two parts, 1085 and 868, that added together give a triangular number (1953 = T₆₂).

The spelling of 1085868 in words is "one million, eighty-five thousand, eight hundred sixty-eight".