505706506 has 8 divisors (see below), whose sum is σ = 759146724. Its totient is φ = 252657600.

The previous prime is 505706501. The next prime is 505706519. The reversal of 505706506 is 605607505.

It can be written as a sum of positive squares in 2 ways, for example, as 439950625 + 65755881 = 20975^2 + 8109^2 .

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

It is not an unprimeable number, because it can be changed into a prime (505706501) 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, 94575 + ... + 99778.

Almost surely, 2^505706506 is an apocalyptic number.

505706506 is a deficient number, since it is larger than the sum of its proper divisors (253440218).

505706506 is a wasteful number, since it uses less digits than its factorization.

505706506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195656.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 505706506 is about 22487.9191122700. The cubic root of 505706506 is about 796.7086155985.

Subtracting 505706506 from its reverse (605607505), we obtain a palindrome (99900999).

The spelling of 505706506 in words is "five hundred five million, seven hundred six thousand, five hundred six".