1081906 has 8 divisors (see below), whose sum is σ = 1854720. Its totient is φ = 463668.

The previous prime is 1081901. The next prime is 1081907. The reversal of 1081906 is 6091801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1081901) 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, 38626 + ... + 38653.

It is an arithmetic number, because the mean of its divisors is an integer number (231840).

2^1081906 is an apocalyptic number.

1081906 is a deficient number, since it is larger than the sum of its proper divisors (772814).

1081906 is an equidigital number, since it uses as much as digits as its factorization.

1081906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77288.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1081906 is about 1040.1471049808. The cubic root of 1081906 is about 102.6588771474.

The spelling of 1081906 in words is "one million, eighty-one thousand, nine hundred six".