1008561 has 8 divisors (see below), whose sum is σ = 1351584. Its totient is φ = 668960.

The previous prime is 1008547. The next prime is 1008563. The reversal of 1008561 is 1658001.

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

It is a cyclic number.

It is not a de Polignac number, because 1008561 - 2⁷ = 1008433 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1008563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60 + ... + 1421.

It is an arithmetic number, because the mean of its divisors is an integer number (168948).

2^1008561 is an apocalyptic number.

It is an amenable number.

1008561 is a deficient number, since it is larger than the sum of its proper divisors (343023).

1008561 is a wasteful number, since it uses less digits than its factorization.

1008561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1008561 is about 1004.2713776664. The cubic root of 1008561 is about 100.2845561765.

The spelling of 1008561 in words is "one million, eight thousand, five hundred sixty-one".