618313 has 4 divisors (see below), whose sum is σ = 620928. Its totient is φ = 615700.

The previous prime is 618311. The next prime is 618323. The reversal of 618313 is 313816.

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 not a de Polignac number, because 618313 - 2¹ = 618311 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

618313 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (618311) 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, 913 + ... + 1438.

It is an arithmetic number, because the mean of its divisors is an integer number (155232).

2⁶¹⁸³¹³ is an apocalyptic number.

It is an amenable number.

618313 is a deficient number, since it is larger than the sum of its proper divisors (2615).

618313 is a wasteful number, since it uses less digits than its factorization.

618313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614.

The product of its digits is 432, while the sum is 22.

The square root of 618313 is about 786.3288116304. The cubic root of 618313 is about 85.1927804355.

The spelling of 618313 in words is "six hundred eighteen thousand, three hundred thirteen".