1009563 has 4 divisors (see below), whose sum is σ = 1346088. Its totient is φ = 673040.

The previous prime is 1009559. The next prime is 1009573. The reversal of 1009563 is 3659001.

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

It is a cyclic number.

It is not a de Polignac number, because 1009563 - 2² = 1009559 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1009573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168258 + ... + 168263.

It is an arithmetic number, because the mean of its divisors is an integer number (336522).

2^1009563 is an apocalyptic number.

1009563 is a deficient number, since it is larger than the sum of its proper divisors (336525).

1009563 is an equidigital number, since it uses as much as digits as its factorization.

1009563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336524.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 1009563 is about 1004.7701229635. The cubic root of 1009563 is about 100.3177559090.

The spelling of 1009563 in words is "one million, nine thousand, five hundred sixty-three".