505656567 has 48 divisors (see below), whose sum is σ = 827867040. Its totient is φ = 303229440.

The previous prime is 505656553. The next prime is 505656583. The reversal of 505656567 is 765656505.

It is not a de Polignac number, because 505656567 - 2⁷ = 505656439 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505657567) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 589603 + ... + 590459.

It is an arithmetic number, because the mean of its divisors is an integer number (17247230).

Almost surely, 2^505656567 is an apocalyptic number.

505656567 is a deficient number, since it is larger than the sum of its proper divisors (322210473).

505656567 is a wasteful number, since it uses less digits than its factorization.

505656567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 945000, while the sum is 45.

The square root of 505656567 is about 22486.8087331217. The cubic root of 505656567 is about 796.6823894899.

The spelling of 505656567 in words is "five hundred five million, six hundred fifty-six thousand, five hundred sixty-seven".