506623823 has 4 divisors (see below), whose sum is σ = 524093640. Its totient is φ = 489154008.

The previous prime is 506623811. The next prime is 506623841. The reversal of 506623823 is 328326605.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 506623823 - 2⁶ = 506623759 is a prime.

It is a super-2 number, since 2×506623823² = 513335396062270658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506623853) 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, 8734865 + ... + 8734922.

It is an arithmetic number, because the mean of its divisors is an integer number (131023410).

Almost surely, 2^506623823 is an apocalyptic number.

506623823 is a deficient number, since it is larger than the sum of its proper divisors (17469817).

506623823 is a wasteful number, since it uses less digits than its factorization.

506623823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17469816.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 506623823 is about 22508.3056448059. The cubic root of 506623823 is about 797.1900495915.

The spelling of 506623823 in words is "five hundred six million, six hundred twenty-three thousand, eight hundred twenty-three".