1091064 has 48 divisors (see below), whose sum is σ = 2964600. Its totient is φ = 334464.

The previous prime is 1091063. The next prime is 1091071. The reversal of 1091064 is 4601901.

It is a self number, because there is not a number n which added to its sum of digits gives 1091064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091063) 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, 3922 + ... + 4190.

2^1091064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1091064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1482300).

1091064 is an abundant number, since it is smaller than the sum of its proper divisors (1873536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1091064 is a wasteful number, since it uses less digits than its factorization.

1091064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1091064 is about 1044.5400901832. The cubic root of 1091064 is about 102.9477222376.

Adding to 1091064 its reverse (4601901), we get a palindrome (5692965).

The spelling of 1091064 in words is "one million, ninety-one thousand, sixty-four".