506661005 has 4 divisors (see below), whose sum is σ = 607993212. Its totient is φ = 405328800.

The previous prime is 506660989. The next prime is 506661019. The reversal of 506661005 is 500166605.

506661005 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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 113273449 + 393387556 = 10643^2 + 19834^2 .

It is not a de Polignac number, because 506661005 - 2⁴ = 506660989 is a prime.

It is a super-2 number, since 2×506661005² = 513410747975220050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 50666096 + ... + 50666105.

It is an arithmetic number, because the mean of its divisors is an integer number (151998303).

Almost surely, 2^506661005 is an apocalyptic number.

It is an amenable number.

506661005 is a deficient number, since it is larger than the sum of its proper divisors (101332207).

506661005 is a wasteful number, since it uses less digits than its factorization.

506661005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101332206.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 506661005 is about 22509.1315914231. The cubic root of 506661005 is about 797.2095515007.

The spelling of 506661005 in words is "five hundred six million, six hundred sixty-one thousand, five".