1081807 has 4 divisors (see below), whose sum is σ = 1116736. Its totient is φ = 1046880.

The previous prime is 1081793. The next prime is 1081813. The reversal of 1081807 is 7081801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7081801 = 263 ⋅26927.

It is a cyclic number.

It is not a de Polignac number, because 1081807 - 2⁷ = 1081679 is a prime.

It is a Duffinian number.

1081807 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17418 + ... + 17479.

It is an arithmetic number, because the mean of its divisors is an integer number (279184).

2^1081807 is an apocalyptic number.

1081807 is a deficient number, since it is larger than the sum of its proper divisors (34929).

1081807 is an equidigital number, since it uses as much as digits as its factorization.

1081807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34928.

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 1081807 is about 1040.0995144696. The cubic root of 1081807 is about 102.6557457790.

The spelling of 1081807 in words is "one million, eighty-one thousand, eight hundred seven".