618804 has 18 divisors (see below), whose sum is σ = 1564290. Its totient is φ = 206256.

The previous prime is 618799. The next prime is 618823. The reversal of 618804 is 408816.

It can be written as a sum of positive squares in only one way, i.e., 608400 + 10404 = 780^2 + 102^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8559 + ... + 8630.

It is an arithmetic number, because the mean of its divisors is an integer number (86905).

2⁶¹⁸⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

618804 is an abundant number, since it is smaller than the sum of its proper divisors (945486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618804 is a wasteful number, since it uses less digits than its factorization.

618804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17199 (or 17194 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 618804 is about 786.6409600320. The cubic root of 618804 is about 85.2153248900.

The spelling of 618804 in words is "six hundred eighteen thousand, eight hundred four".