818680608 has 144 divisors (see below), whose sum is σ = 2436295680. Its totient is φ = 270418176.

The previous prime is 818680601. The next prime is 818680613. The reversal of 818680608 is 806086818.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (818680601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 987138 + ... + 987966.

It is an arithmetic number, because the mean of its divisors is an integer number (16918720).

Almost surely, 2^818680608 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 818680608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1218147840).

818680608 is an abundant number, since it is smaller than the sum of its proper divisors (1617615072).

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

818680608 is a wasteful number, since it uses less digits than its factorization.

818680608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 818680608 is about 28612.5952685177. The cubic root of 818680608 is about 935.4878855380.

The spelling of 818680608 in words is "eight hundred eighteen million, six hundred eighty thousand, six hundred eight".