618489 has 8 divisors (see below), whose sum is σ = 916320. Its totient is φ = 412308.

The previous prime is 618463. The next prime is 618509. The reversal of 618489 is 984816.

It is a happy number.

It is not a de Polignac number, because 618489 - 2⁷ = 618361 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (618439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11427 + ... + 11480.

It is an arithmetic number, because the mean of its divisors is an integer number (114540).

2⁶¹⁸⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

618489 is a deficient number, since it is larger than the sum of its proper divisors (297831).

618489 is a wasteful number, since it uses less digits than its factorization.

618489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22916 (or 22910 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 618489 is about 786.4407161382. The cubic root of 618489 is about 85.2008629153.

The spelling of 618489 in words is "six hundred eighteen thousand, four hundred eighty-nine".