506420605 has 8 divisors (see below), whose sum is σ = 608283864. Its totient is φ = 404750400.

The previous prime is 506420587. The next prime is 506420617. The reversal of 506420605 is 506024605.

It can be written as a sum of positive squares in 4 ways, for example, as 109056249 + 397364356 = 10443^2 + 19934^2 .

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

It is not a de Polignac number, because 506420605 - 2⁷ = 506420477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42426 + ... + 53035.

It is an arithmetic number, because the mean of its divisors is an integer number (76035483).

Almost surely, 2^506420605 is an apocalyptic number.

It is an amenable number.

506420605 is a deficient number, since it is larger than the sum of its proper divisors (101863259).

506420605 is a wasteful number, since it uses less digits than its factorization.

506420605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96527.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 506420605 is about 22503.7909028679. The cubic root of 506420605 is about 797.0834451604.

The spelling of 506420605 in words is "five hundred six million, four hundred twenty thousand, six hundred five".