616564 has 24 divisors (see below), whose sum is σ = 1185408. Its totient is φ = 278880.

The previous prime is 616547. The next prime is 616579. The reversal of 616564 is 465616.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3609 + ... + 3775.

It is an arithmetic number, because the mean of its divisors is an integer number (49392).

2⁶¹⁶⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

616564 is a deficient number, since it is larger than the sum of its proper divisors (568844).

616564 is a wasteful number, since it uses less digits than its factorization.

616564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 253 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 616564 is about 785.2158938789. The cubic root of 616564 is about 85.1123773136.

The spelling of 616564 in words is "six hundred sixteen thousand, five hundred sixty-four".