504681 has 4 divisors (see below), whose sum is σ = 672912. Its totient is φ = 336452.

The previous prime is 504677. The next prime is 504683. The reversal of 504681 is 186405.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 504681 - 2² = 504677 is a prime.

It is a super-2 number, since 2×504681² = 509405823522, which contains 22 as substring.

It is a D-number.

504681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (504683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84111 + ... + 84116.

It is an arithmetic number, because the mean of its divisors is an integer number (168228).

2⁵⁰⁴⁶⁸¹ is an apocalyptic number.

It is an amenable number.

504681 is a deficient number, since it is larger than the sum of its proper divisors (168231).

504681 is a wasteful number, since it uses less digits than its factorization.

504681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168230.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 504681 is about 710.4090371047. The cubic root of 504681 is about 79.6169711211.

The spelling of 504681 in words is "five hundred four thousand, six hundred eighty-one".