504496681 has 4 divisors (see below), whose sum is σ = 543304132. Its totient is φ = 465689232.

The previous prime is 504496639. The next prime is 504496693. The reversal of 504496681 is 186694405.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 186694405 = 5 ⋅37338881.

It can be written as a sum of positive squares in 2 ways, for example, as 79477225 + 425019456 = 8915^2 + 20616^2 .

It is a cyclic number.

It is not a de Polignac number, because 504496681 - 2¹³ = 504488489 is a prime.

It is a super-2 number, since 2×504496681² = 509033802280031522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (504496621) 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, 19403706 + ... + 19403731.

It is an arithmetic number, because the mean of its divisors is an integer number (135826033).

Almost surely, 2^504496681 is an apocalyptic number.

It is an amenable number.

504496681 is a deficient number, since it is larger than the sum of its proper divisors (38807451).

504496681 is a wasteful number, since it uses less digits than its factorization.

504496681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38807450.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 504496681 is about 22461.0035617289. The cubic root of 504496681 is about 796.0727740212.

The spelling of 504496681 in words is "five hundred four million, four hundred ninety-six thousand, six hundred eighty-one".