668733348 has 48 divisors (see below), whose sum is σ = 1647959040. Its totient is φ = 210477600.

The previous prime is 668733323. The next prime is 668733361. The reversal of 668733348 is 843337866.

It is a junction number, because it is equal to n+sod(n) for n = 668733297 and 668733306.

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, 66193 + ... + 75623.

It is an arithmetic number, because the mean of its divisors is an integer number (34332480).

Almost surely, 2^668733348 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668733348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (823979520).

668733348 is an abundant number, since it is smaller than the sum of its proper divisors (979225692).

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

668733348 is a wasteful number, since it uses less digits than its factorization.

668733348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9768 (or 9766 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 48.

The square root of 668733348 is about 25859.8791180469. The cubic root of 668733348 is about 874.4822397563.

The spelling of 668733348 in words is "six hundred sixty-eight million, seven hundred thirty-three thousand, three hundred forty-eight".