506506643 has 2 divisors, whose sum is σ = 506506644. Its totient is φ = 506506642.

The previous prime is 506506603. The next prime is 506506717. The reversal of 506506643 is 346605605.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 506506643 - 2¹⁶ = 506441107 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (506506603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253253321 + 253253322.

It is an arithmetic number, because the mean of its divisors is an integer number (253253322).

Almost surely, 2^506506643 is an apocalyptic number.

506506643 is a deficient number, since it is larger than the sum of its proper divisors (1).

506506643 is an equidigital number, since it uses as much as digits as its factorization.

506506643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 506506643 is about 22505.7024551557. The cubic root of 506506643 is about 797.1285825958.

The spelling of 506506643 in words is "five hundred six million, five hundred six thousand, six hundred forty-three".