506641 has 4 divisors (see below), whose sum is σ = 520372. Its totient is φ = 492912.

The previous prime is 506629. The next prime is 506647. The reversal of 506641 is 146605.

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

It can be written as a sum of positive squares in 2 ways, for example, as 490000 + 16641 = 700^2 + 129^2 .

It is a cyclic number.

It is not a de Polignac number, because 506641 - 2⁵ = 506609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6810 + ... + 6883.

It is an arithmetic number, because the mean of its divisors is an integer number (130093).

2⁵⁰⁶⁶⁴¹ is an apocalyptic number.

It is an amenable number.

506641 is a deficient number, since it is larger than the sum of its proper divisors (13731).

506641 is a wasteful number, since it uses less digits than its factorization.

506641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13730.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 506641 is about 711.7871872969. The cubic root of 506641 is about 79.7199059024.

The spelling of 506641 in words is "five hundred six thousand, six hundred forty-one".