1089613 has 12 divisors (see below), whose sum is σ = 1303932. Its totient is φ = 907200.

The previous prime is 1089611. The next prime is 1089629. The reversal of 1089613 is 3169801.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 946729 + 142884 = 973^2 + 378^2 .

It is not a de Polignac number, because 1089613 - 2¹ = 1089611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1513 + ... + 2113.

It is an arithmetic number, because the mean of its divisors is an integer number (108661).

2^1089613 is an apocalyptic number.

It is an amenable number.

1089613 is a deficient number, since it is larger than the sum of its proper divisors (214319).

1089613 is an equidigital number, since it uses as much as digits as its factorization.

1089613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1089613 is about 1043.8452950509. The cubic root of 1089613 is about 102.9020654559.

The spelling of 1089613 in words is "one million, eighty-nine thousand, six hundred thirteen".