505016723 has 4 divisors (see below), whose sum is σ = 505062120. Its totient is φ = 504971328.

The previous prime is 505016711. The next prime is 505016747. The reversal of 505016723 is 327610505.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 505016723 - 2¹⁴ = 505000339 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505016783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6563 + ... + 32451.

It is an arithmetic number, because the mean of its divisors is an integer number (126265530).

Almost surely, 2^505016723 is an apocalyptic number.

505016723 is a deficient number, since it is larger than the sum of its proper divisors (45397).

505016723 is a wasteful number, since it uses less digits than its factorization.

505016723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45396.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 505016723 is about 22472.5771330304. The cubic root of 505016723 is about 796.3462142804.

The spelling of 505016723 in words is "five hundred five million, sixteen thousand, seven hundred twenty-three".