612566 has 8 divisors (see below), whose sum is σ = 930720. Its totient is φ = 302328.

The previous prime is 612553. The next prime is 612583. The reversal of 612566 is 665216.

612566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 612566.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781 + ... + 2096.

It is an arithmetic number, because the mean of its divisors is an integer number (116340).

2⁶¹²⁵⁶⁶ is an apocalyptic number.

612566 is a deficient number, since it is larger than the sum of its proper divisors (318154).

612566 is a wasteful number, since it uses less digits than its factorization.

612566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958.

The product of its digits is 2160, while the sum is 26.

The square root of 612566 is about 782.6659568424. The cubic root of 612566 is about 84.9280128685.

Subtracting 612566 from its reverse (665216), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 612566 in words is "six hundred twelve thousand, five hundred sixty-six".