618880 has 32 divisors (see below), whose sum is σ = 1481040. Its totient is φ = 247296.

The previous prime is 618869. The next prime is 618883. The reversal of 618880 is 88816.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×618880³ = 711116243337216000, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157 + ... + 1123.

2⁶¹⁸⁸⁸⁰ 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 618880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (740520).

618880 is an abundant number, since it is smaller than the sum of its proper divisors (862160).

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

618880 is an equidigital number, since it uses as much as digits as its factorization.

618880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 618880 is about 786.6892652121. The cubic root of 618880 is about 85.2188133934.

The spelling of 618880 in words is "six hundred eighteen thousand, eight hundred eighty".