654563 has 8 divisors (see below), whose sum is σ = 805728. Its totient is φ = 517824.

The previous prime is 654553. The next prime is 654571. The reversal of 654563 is 365456.

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 654563 - 2⁶ = 654499 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (654553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3506 + ... + 3687.

It is an arithmetic number, because the mean of its divisors is an integer number (100716).

2⁶⁵⁴⁵⁶³ is an apocalyptic number.

654563 is a deficient number, since it is larger than the sum of its proper divisors (151165).

654563 is a wasteful number, since it uses less digits than its factorization.

654563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7213.

The product of its digits is 10800, while the sum is 29.

The square root of 654563 is about 809.0506782643. The cubic root of 654563 is about 86.8261380081.

The spelling of 654563 in words is "six hundred fifty-four thousand, five hundred sixty-three".