618340 has 24 divisors (see below), whose sum is σ = 1330560. Its totient is φ = 241248.

The previous prime is 618337. The next prime is 618347. The reversal of 618340 is 43816.

It is not an unprimeable number, because it can be changed into a prime (618347) 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 in 7 ways as a sum of consecutive naturals, for example, 501 + ... + 1219.

It is an arithmetic number, because the mean of its divisors is an integer number (55440).

2⁶¹⁸³⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665280).

618340 is an abundant number, since it is smaller than the sum of its proper divisors (712220).

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

618340 is a wasteful number, since it uses less digits than its factorization.

618340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771 (or 769 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 618340 is about 786.3459798333. The cubic root of 618340 is about 85.1940204610.

The spelling of 618340 in words is "six hundred eighteen thousand, three hundred forty".