506623731 has 16 divisors (see below), whose sum is σ = 704071680. Its totient is φ = 323674560.

The previous prime is 506623703. The next prime is 506623739. The reversal of 506623731 is 137326605.

It is not a de Polignac number, because 506623731 - 2⁵ = 506623699 is a prime.

It is a super-2 number, since 2×506623731² = 513335209624720722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 506623692 and 506623701.

It is not an unprimeable number, because it can be changed into a prime (506623739) 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, 16866 + ... + 36023.

It is an arithmetic number, because the mean of its divisors is an integer number (44004480).

Almost surely, 2^506623731 is an apocalyptic number.

506623731 is a deficient number, since it is larger than the sum of its proper divisors (197447949).

506623731 is a wasteful number, since it uses less digits than its factorization.

506623731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53026.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 506623731 is about 22508.3036011157. The cubic root of 506623731 is about 797.1900013365.

The spelling of 506623731 in words is "five hundred six million, six hundred twenty-three thousand, seven hundred thirty-one".