618563 has 8 divisors (see below), whose sum is σ = 688176. Its totient is φ = 551200.

The previous prime is 618559. The next prime is 618571. The reversal of 618563 is 365816.

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

It is not a de Polignac number, because 618563 - 2² = 618559 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618593) 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, 53 + ... + 1113.

It is an arithmetic number, because the mean of its divisors is an integer number (86022).

2⁶¹⁸⁵⁶³ is an apocalyptic number.

618563 is a deficient number, since it is larger than the sum of its proper divisors (69613).

618563 is a wasteful number, since it uses less digits than its factorization.

618563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125.

The product of its digits is 4320, while the sum is 29.

The square root of 618563 is about 786.4877621426. The cubic root of 618563 is about 85.2042607728.

The spelling of 618563 in words is "six hundred eighteen thousand, five hundred sixty-three".