1000563 has 8 divisors (see below), whose sum is σ = 1341648. Its totient is φ = 663264.

The previous prime is 1000547. The next prime is 1000577. The reversal of 1000563 is 3650001.

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

It is not a de Polignac number, because 1000563 - 2⁴ = 1000547 is a prime.

It is a super-2 number, since 2×1000563² = 2002252633938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1000763) 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 7 ways as a sum of consecutive naturals, for example, 256 + ... + 1437.

It is an arithmetic number, because the mean of its divisors is an integer number (167706).

2^1000563 is an apocalyptic number.

1000563 is a deficient number, since it is larger than the sum of its proper divisors (341085).

1000563 is a wasteful number, since it uses less digits than its factorization.

1000563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 1000563 is about 1000.2814603900. The cubic root of 1000563 is about 100.0187631459.

Adding to 1000563 its reverse (3650001), we get a palindrome (4650564).

The spelling of 1000563 in words is "one million, five hundred sixty-three", and thus it is an aban number.