662318020 has 48 divisors (see below), whose sum is σ = 1711842048. Its totient is φ = 209612160.

The previous prime is 662317987. The next prime is 662318047. The reversal of 662318020 is 20813266.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 662318020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180136 + ... + 183775.

It is an arithmetic number, because the mean of its divisors is an integer number (35663376).

Almost surely, 2^662318020 is an apocalyptic number.

It is an amenable number.

662318020 is an abundant number, since it is smaller than the sum of its proper divisors (1049524028).

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

662318020 is a wasteful number, since it uses less digits than its factorization.

662318020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363940 (or 363938 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 662318020 is about 25735.5400176487. The cubic root of 662318020 is about 871.6768733056.

The spelling of 662318020 in words is "six hundred sixty-two million, three hundred eighteen thousand, twenty".