618593 has 2 divisors, whose sum is σ = 618594. Its totient is φ = 618592.

The previous prime is 618589. The next prime is 618619. The reversal of 618593 is 395816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 508369 + 110224 = 713^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 618593 - 2² = 618589 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (608593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309296 + 309297.

It is an arithmetic number, because the mean of its divisors is an integer number (309297).

2⁶¹⁸⁵⁹³ is an apocalyptic number.

It is an amenable number.

618593 is a deficient number, since it is larger than the sum of its proper divisors (1).

618593 is an equidigital number, since it uses as much as digits as its factorization.

618593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 618593 is about 786.5068340453. The cubic root of 618593 is about 85.2056382053.

The spelling of 618593 in words is "six hundred eighteen thousand, five hundred ninety-three".