1068509 has 4 divisors (see below), whose sum is σ = 1150716. Its totient is φ = 986304.

The previous prime is 1068499. The next prime is 1068517. The reversal of 1068509 is 9058601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62500 + 1006009 = 250^2 + 1003^2 .

It is a cyclic number.

It is not a de Polignac number, because 1068509 - 2⁸ = 1068253 is a prime.

It is a super-2 number, since 2×1068509² = 2283422966162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068559) 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, 41084 + ... + 41109.

It is an arithmetic number, because the mean of its divisors is an integer number (287679).

2^1068509 is an apocalyptic number.

It is an amenable number.

1068509 is a deficient number, since it is larger than the sum of its proper divisors (82207).

1068509 is an equidigital number, since it uses as much as digits as its factorization.

1068509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82206.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1068509 is about 1033.6870899842. The cubic root of 1068509 is about 102.2333820432.

The spelling of 1068509 in words is "one million, sixty-eight thousand, five hundred nine".