605721163 has 4 divisors (see below), whose sum is σ = 607908160. Its totient is φ = 603534168.

The previous prime is 605721161. The next prime is 605721187. The reversal of 605721163 is 361127506.

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 605721163 - 2¹ = 605721161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605721161) 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, 1093083 + ... + 1093636.

It is an arithmetic number, because the mean of its divisors is an integer number (151977040).

Almost surely, 2^605721163 is an apocalyptic number.

605721163 is a deficient number, since it is larger than the sum of its proper divisors (2186997).

605721163 is a wasteful number, since it uses less digits than its factorization.

605721163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186996.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 605721163 is about 24611.4031091281. The cubic root of 605721163 is about 846.1049760101.

Adding to 605721163 its reverse (361127506), we get a palindrome (966848669).

The spelling of 605721163 in words is "six hundred five million, seven hundred twenty-one thousand, one hundred sixty-three".