1091006 has 8 divisors (see below), whose sum is σ = 1870320. Its totient is φ = 467568.

The previous prime is 1091003. The next prime is 1091017. The reversal of 1091006 is 6001901.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091003) 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, 38951 + ... + 38978.

It is an arithmetic number, because the mean of its divisors is an integer number (233790).

2^1091006 is an apocalyptic number.

1091006 is a deficient number, since it is larger than the sum of its proper divisors (779314).

1091006 is an equidigital number, since it uses as much as digits as its factorization.

1091006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77938.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1091006 is about 1044.5123263993. The cubic root of 1091006 is about 102.9458980019.

Adding to 1091006 its reverse (6001901), we get a palindrome (7092907).

The spelling of 1091006 in words is "one million, ninety-one thousand, six".