1086205 has 4 divisors (see below), whose sum is σ = 1303452. Its totient is φ = 868960.

The previous prime is 1086203. The next prime is 1086247. The reversal of 1086205 is 5026801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5026801 = 13 ⋅386677.

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 674041 = 642^2 + 821^2 .

It is not a de Polignac number, because 1086205 - 2¹ = 1086203 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1086203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108616 + ... + 108625.

It is an arithmetic number, because the mean of its divisors is an integer number (325863).

2^1086205 is an apocalyptic number.

It is an amenable number.

1086205 is a deficient number, since it is larger than the sum of its proper divisors (217247).

1086205 is an equidigital number, since it uses as much as digits as its factorization.

1086205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217246.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1086205 is about 1042.2115908010. The cubic root of 1086205 is about 102.7946705994.

The spelling of 1086205 in words is "one million, eighty-six thousand, two hundred five".