618347 has 2 divisors, whose sum is σ = 618348. Its totient is φ = 618346.

The previous prime is 618337. The next prime is 618349. The reversal of 618347 is 743816.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618347 is a prime.

Together with 618349, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (618349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309173 + 309174.

It is an arithmetic number, because the mean of its divisors is an integer number (309174).

2⁶¹⁸³⁴⁷ is an apocalyptic number.

618347 is a deficient number, since it is larger than the sum of its proper divisors (1).

618347 is an equidigital number, since it uses as much as digits as its factorization.

618347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 618347 is about 786.3504307877. The cubic root of 618347 is about 85.1943419432.

The spelling of 618347 in words is "six hundred eighteen thousand, three hundred forty-seven".