605643313 has 4 divisors (see below), whose sum is σ = 660701808. Its totient is φ = 550584820.

The previous prime is 605643301. The next prime is 605643331. The reversal of 605643313 is 313346506.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-605643313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605644313) 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, 27529231 + ... + 27529252.

It is an arithmetic number, because the mean of its divisors is an integer number (165175452).

Almost surely, 2^605643313 is an apocalyptic number.

It is an amenable number.

605643313 is a deficient number, since it is larger than the sum of its proper divisors (55058495).

605643313 is a wasteful number, since it uses less digits than its factorization.

605643313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55058494.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 605643313 is about 24609.8214743626. The cubic root of 605643313 is about 846.0687260552.

Adding to 605643313 its reverse (313346506), we get a palindrome (918989819).

The spelling of 605643313 in words is "six hundred five million, six hundred forty-three thousand, three hundred thirteen".