1086855 has 32 divisors (see below), whose sum is σ = 2170368. Its totient is φ = 451200.

The previous prime is 1086817. The next prime is 1086859. The reversal of 1086855 is 5586801.

It is not a de Polignac number, because 1086855 - 2⁶ = 1086791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

1086855 is a lucky number.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 685 + ... + 1625.

It is an arithmetic number, because the mean of its divisors is an integer number (67824).

2^1086855 is an apocalyptic number.

1086855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1086855 is a deficient number, since it is larger than the sum of its proper divisors (1083513).

1086855 is a wasteful number, since it uses less digits than its factorization.

1086855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967.

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 1086855 is about 1042.5233810328. The cubic root of 1086855 is about 102.8151710919.

Multiplying 1086855 by its sum of digits (33), we get a triangular number (35866215 = T₈₄₆₉).

The spelling of 1086855 in words is "one million, eighty-six thousand, eight hundred fifty-five".