506608591 has 4 divisors (see below), whose sum is σ = 509261184. Its totient is φ = 503956000.

The previous prime is 506608579. The next prime is 506608607. The reversal of 506608591 is 195806605.

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 506608591 - 2⁷ = 506608463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506608691) 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, 1326010 + ... + 1326391.

It is an arithmetic number, because the mean of its divisors is an integer number (127315296).

Almost surely, 2^506608591 is an apocalyptic number.

506608591 is a deficient number, since it is larger than the sum of its proper divisors (2652593).

506608591 is a wasteful number, since it uses less digits than its factorization.

506608591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652592.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 506608591 is about 22507.9672782773. The cubic root of 506608591 is about 797.1820601524.

The spelling of 506608591 in words is "five hundred six million, six hundred eight thousand, five hundred ninety-one".