616563 has 6 divisors (see below), whose sum is σ = 890604. Its totient is φ = 411036.

The previous prime is 616547. The next prime is 616579. The reversal of 616563 is 365616.

616563 is a `hidden beast` number, since 6 + 1 + 656 + 3 = 666.

616563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (616547) and next prime (616579).

It is not a de Polignac number, because 616563 - 2⁴ = 616547 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 (616513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34245 + ... + 34262.

It is an arithmetic number, because the mean of its divisors is an integer number (148434).

2⁶¹⁶⁵⁶³ is an apocalyptic number.

616563 is a deficient number, since it is larger than the sum of its proper divisors (274041).

616563 is a wasteful number, since it uses less digits than its factorization.

616563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68513 (or 68510 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 616563 is about 785.2152571111. The cubic root of 616563 is about 85.1123312992.

The spelling of 616563 in words is "six hundred sixteen thousand, five hundred sixty-three".