506673845 has 4 divisors (see below), whose sum is σ = 608008620. Its totient is φ = 405339072.

The previous prime is 506673841. The next prime is 506673851. The reversal of 506673845 is 548376605.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81613156 + 425060689 = 9034^2 + 20617^2 .

It is a cyclic number.

It is not a de Polignac number, because 506673845 - 2² = 506673841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 506673796 and 506673805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506673841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50667380 + ... + 50667389.

It is an arithmetic number, because the mean of its divisors is an integer number (152002155).

Almost surely, 2^506673845 is an apocalyptic number.

It is an amenable number.

506673845 is a deficient number, since it is larger than the sum of its proper divisors (101334775).

506673845 is a wasteful number, since it uses less digits than its factorization.

506673845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101334774.

The product of its (nonzero) digits is 604800, while the sum is 44.

The square root of 506673845 is about 22509.4168071943. The cubic root of 506673845 is about 797.2162858418.

The spelling of 506673845 in words is "five hundred six million, six hundred seventy-three thousand, eight hundred forty-five".