505723 has 8 divisors (see below), whose sum is σ = 545600. Its totient is φ = 467208.

The previous prime is 505711. The next prime is 505727. The reversal of 505723 is 327505.

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

It is a cyclic number.

It is not a de Polignac number, because 505723 - 2⁵ = 505691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505694 and 505703.

It is not an unprimeable number, because it can be changed into a prime (505727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508 + ... + 1126.

It is an arithmetic number, because the mean of its divisors is an integer number (68200).

2⁵⁰⁵⁷²³ is an apocalyptic number.

505723 is a deficient number, since it is larger than the sum of its proper divisors (39877).

505723 is a wasteful number, since it uses less digits than its factorization.

505723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681.

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 505723 is about 711.1420392580. The cubic root of 505723 is about 79.6717277256.

The spelling of 505723 in words is "five hundred five thousand, seven hundred twenty-three".