818608 has 20 divisors (see below), whose sum is σ = 1812880. Its totient is φ = 350784.

The previous prime is 818603. The next prime is 818621. The reversal of 818608 is 806818.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 818608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818603) by changing a digit.

818608 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 3543 + ... + 3766.

It is an arithmetic number, because the mean of its divisors is an integer number (90644).

2⁸¹⁸⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

818608 is an abundant number, since it is smaller than the sum of its proper divisors (994272).

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

818608 is a wasteful number, since it uses less digits than its factorization.

818608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7324 (or 7318 counting only the distinct ones).

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

The square root of 818608 is about 904.7695839273. The cubic root of 818608 is about 93.5460228878.

The spelling of 818608 in words is "eight hundred eighteen thousand, six hundred eight".