1086858 has 20 divisors (see below), whose sum is σ = 2435730. Its totient is φ = 362232.

The previous prime is 1086817. The next prime is 1086859. The reversal of 1086858 is 8586801.

It can be written as a sum of positive squares in only one way, i.e., 859329 + 227529 = 927^2 + 477^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1086859) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3193 + ... + 3516.

2^1086858 is an apocalyptic number.

1086858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1086858 is an abundant number, since it is smaller than the sum of its proper divisors (1348872).

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

1086858 is an equidigital number, since it uses as much as digits as its factorization.

1086858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6723 (or 6714 counting only the distinct ones).

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

The square root of 1086858 is about 1042.5248198484. The cubic root of 1086858 is about 102.8152656906.

It can be divided in two parts, 10 and 86858, that added together give a palindrome (86868).

The spelling of 1086858 in words is "one million, eighty-six thousand, eight hundred fifty-eight".