1106581 has 12 divisors (see below), whose sum is σ = 1345888. Its totient is φ = 891072.

The previous prime is 1106569. The next prime is 1106593. The reversal of 1106581 is 1856011.

It is an interprime number because it is at equal distance from previous prime (1106569) and next prime (1106593).

It is not a de Polignac number, because 1106581 - 2⁹ = 1106069 is a prime.

It is a super-2 number, since 2×1106581² = 2449043019122, which contains 22 as substring.

It is a Duffinian number.

1106581 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1106531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1750 + ... + 2296.

2^1106581 is an apocalyptic number.

It is an amenable number.

1106581 is a deficient number, since it is larger than the sum of its proper divisors (239307).

1106581 is an equidigital number, since it uses as much as digits as its factorization.

1106581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 1106581 is about 1051.9415382995. The cubic root of 1106581 is about 103.4334640466.

The spelling of 1106581 in words is "one million, one hundred six thousand, five hundred eighty-one".