506631 has 8 divisors (see below), whose sum is σ = 682864. Its totient is φ = 334080.

The previous prime is 506629. The next prime is 506647. The reversal of 506631 is 136605.

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

It is not a de Polignac number, because 506631 - 2¹ = 506629 is a prime.

It is a super-2 number, since 2×506631² = 513349940322, which contains 22 as substring.

It is a Duffinian number.

506631 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 506598 and 506607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506131) 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, 580 + ... + 1161.

It is an arithmetic number, because the mean of its divisors is an integer number (85358).

2⁵⁰⁶⁶³¹ is an apocalyptic number.

506631 is a deficient number, since it is larger than the sum of its proper divisors (176233).

506631 is a wasteful number, since it uses less digits than its factorization.

506631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 506631 is about 711.7801626907. The cubic root of 506631 is about 79.7193813993.

The spelling of 506631 in words is "five hundred six thousand, six hundred thirty-one".