668228160 has 112 divisors (see below), whose sum is σ = 2156594112. Its totient is φ = 175257600.

The previous prime is 668228149. The next prime is 668228189. The reversal of 668228160 is 61822866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52855 + ... + 64265.

Almost surely, 2^668228160 is an apocalyptic number.

668228160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668228160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1078297056).

668228160 is an abundant number, since it is smaller than the sum of its proper divisors (1488365952).

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

668228160 is a wasteful number, since it uses less digits than its factorization.

668228160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11492 (or 11482 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 668228160 is about 25850.1094775245. The cubic root of 668228160 is about 874.2619779597.

The spelling of 668228160 in words is "six hundred sixty-eight million, two hundred twenty-eight thousand, one hundred sixty".