506860321 has 16 divisors (see below), whose sum is σ = 616282560. Its totient is φ = 410849280.

The previous prime is 506860313. The next prime is 506860331. The reversal of 506860321 is 123068605.

It is a cyclic number.

It is not a de Polignac number, because 506860321 - 2³ = 506860313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506860301) 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 15 ways as a sum of consecutive naturals, for example, 67776 + ... + 74881.

It is an arithmetic number, because the mean of its divisors is an integer number (38517660).

Almost surely, 2^506860321 is an apocalyptic number.

It is an amenable number.

506860321 is a deficient number, since it is larger than the sum of its proper divisors (109422239).

506860321 is a wasteful number, since it uses less digits than its factorization.

506860321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142704.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 506860321 is about 22513.5586036504. The cubic root of 506860321 is about 797.3140762130.

The spelling of 506860321 in words is "five hundred six million, eight hundred sixty thousand, three hundred twenty-one".