506565894 has 16 divisors (see below), whose sum is σ = 1013364720. Its totient is φ = 168816480.

The previous prime is 506565893. The next prime is 506565911. The reversal of 506565894 is 498565605.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506565893) 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, 33072 + ... + 45900.

It is an arithmetic number, because the mean of its divisors is an integer number (63335295).

Almost surely, 2^506565894 is an apocalyptic number.

506565894 is an abundant number, since it is smaller than the sum of its proper divisors (506798826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

506565894 is a wasteful number, since it uses less digits than its factorization.

506565894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19415.

The product of its (nonzero) digits is 1296000, while the sum is 48.

The square root of 506565894 is about 22507.0187719298. The cubic root of 506565894 is about 797.1596640072.

The spelling of 506565894 in words is "five hundred six million, five hundred sixty-five thousand, eight hundred ninety-four".