506640505 has 16 divisors (see below), whose sum is σ = 695566080. Its totient is φ = 347038272.

The previous prime is 506640503. The next prime is 506640523. The reversal of 506640505 is 505046605.

It is not a de Polignac number, because 506640505 - 2¹ = 506640503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (506640503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27636 + ... + 42154.

It is an arithmetic number, because the mean of its divisors is an integer number (43472880).

Almost surely, 2^506640505 is an apocalyptic number.

It is an amenable number.

506640505 is a deficient number, since it is larger than the sum of its proper divisors (188925575).

506640505 is a wasteful number, since it uses less digits than its factorization.

506640505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15528.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 506640505 is about 22508.6762160728. The cubic root of 506640505 is about 797.1987993962.

The spelling of 506640505 in words is "five hundred six million, six hundred forty thousand, five hundred five".