618679 has 2 divisors, whose sum is σ = 618680. Its totient is φ = 618678.

The previous prime is 618671. The next prime is 618703. The reversal of 618679 is 976816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 618679 - 2³ = 618671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618671) 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 as a sum of consecutive naturals, namely, 309339 + 309340.

It is an arithmetic number, because the mean of its divisors is an integer number (309340).

2⁶¹⁸⁶⁷⁹ is an apocalyptic number.

618679 is a deficient number, since it is larger than the sum of its proper divisors (1).

618679 is an equidigital number, since it uses as much as digits as its factorization.

618679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 618679 is about 786.5615042703. The cubic root of 618679 is about 85.2095865986.

The spelling of 618679 in words is "six hundred eighteen thousand, six hundred seventy-nine".