618380 has 36 divisors (see below), whose sum is σ = 1513008. Its totient is φ = 211680.

The previous prime is 618377. The next prime is 618407. The reversal of 618380 is 83816.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 665 + ... + 1295.

It is an arithmetic number, because the mean of its divisors is an integer number (42028).

2⁶¹⁸³⁸⁰ 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 618380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (756504).

618380 is an abundant number, since it is smaller than the sum of its proper divisors (894628).

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

618380 is a wasteful number, since it uses less digits than its factorization.

618380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 618380 is about 786.3714135191. The cubic root of 618380 is about 85.1958574694.

The spelling of 618380 in words is "six hundred eighteen thousand, three hundred eighty".