506643 has 8 divisors (see below), whose sum is σ = 679056. Its totient is φ = 336000.

The previous prime is 506629. The next prime is 506647. The reversal of 506643 is 346605.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 506643 - 2⁹ = 506131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (506647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543 + ... + 1143.

It is an arithmetic number, because the mean of its divisors is an integer number (84882).

2⁵⁰⁶⁶⁴³ is an apocalyptic number.

506643 is a deficient number, since it is larger than the sum of its proper divisors (172413).

506643 is a wasteful number, since it uses less digits than its factorization.

506643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 506643 is about 711.7885922098. The cubic root of 506643 is about 79.7200108021.

The spelling of 506643 in words is "five hundred six thousand, six hundred forty-three".