662736728228 has 12 divisors (see below), whose sum is σ = 1159941073200. Its totient is φ = 331324993032.

The previous prime is 662736728219. The next prime is 662736728243. The reversal of 662736728228 is 822827637266.

662736728228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 10808378 + ... + 10869521.

It is an arithmetic number, because the mean of its divisors is an integer number (96661756100).

Almost surely, 2^662736728228 is an apocalyptic number.

It is an amenable number.

662736728228 is a deficient number, since it is larger than the sum of its proper divisors (497204344972).

662736728228 is a wasteful number, since it uses less digits than its factorization.

662736728228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21685546 (or 21685544 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 59.

The spelling of 662736728228 in words is "six hundred sixty-two billion, seven hundred thirty-six million, seven hundred twenty-eight thousand, two hundred twenty-eight".