1068561 has 12 divisors (see below), whose sum is σ = 1662388. Its totient is φ = 657504.

The previous prime is 1068559. The next prime is 1068577. The reversal of 1068561 is 1658601.

It can be written as a sum of positive squares in 2 ways, for example, as 497025 + 571536 = 705^2 + 756^2 .

It is not a de Polignac number, because 1068561 - 2¹ = 1068559 is a prime.

It is a super-2 number, since 2×1068561² = 2283645221442, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068061) 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, 4450 + ... + 4683.

2^1068561 is an apocalyptic number.

It is an amenable number.

1068561 is a deficient number, since it is larger than the sum of its proper divisors (593827).

1068561 is a wasteful number, since it uses less digits than its factorization.

1068561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9152 (or 9149 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1068561 is about 1033.7122423576. The cubic root of 1068561 is about 102.2350404443.

The spelling of 1068561 in words is "one million, sixty-eight thousand, five hundred sixty-one".