818474660 has 12 divisors (see below), whose sum is σ = 1718796828. Its totient is φ = 327389856.

The previous prime is 818474659. The next prime is 818474687. The reversal of 818474660 is 66474818.

It can be written as a sum of positive squares in 2 ways, for example, as 321987136 + 496487524 = 17944^2 + 22282^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20461847 + ... + 20461886.

It is an arithmetic number, because the mean of its divisors is an integer number (143233069).

Almost surely, 2^818474660 is an apocalyptic number.

It is an amenable number.

818474660 is an abundant number, since it is smaller than the sum of its proper divisors (900322168).

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

818474660 is a wasteful number, since it uses less digits than its factorization.

818474660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40923742 (or 40923740 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 818474660 is about 28608.9961375788. The cubic root of 818474660 is about 935.4094349127.

The spelling of 818474660 in words is "eight hundred eighteen million, four hundred seventy-four thousand, six hundred sixty".