618847 has 2 divisors, whose sum is σ = 618848. Its totient is φ = 618846.

The previous prime is 618841. The next prime is 618857. The reversal of 618847 is 748816.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 618847 - 2⁷ = 618719 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309423 + 309424.

It is an arithmetic number, because the mean of its divisors is an integer number (309424).

2⁶¹⁸⁸⁴⁷ is an apocalyptic number.

618847 is a deficient number, since it is larger than the sum of its proper divisors (1).

618847 is an equidigital number, since it uses as much as digits as its factorization.

618847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 34.

The square root of 618847 is about 786.6682909588. The cubic root of 618847 is about 85.2172986836.

The spelling of 618847 in words is "six hundred eighteen thousand, eight hundred forty-seven".