668870048 has 96 divisors (see below), whose sum is σ = 1648563840. Its totient is φ = 259522560.

The previous prime is 668870029. The next prime is 668870057. The reversal of 668870048 is 840078866.

It is a happy number.

668870048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×668870048² = 894774282223044608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 668869984 and 668870011.

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, 869408 + ... + 870176.

It is an arithmetic number, because the mean of its divisors is an integer number (17172540).

Almost surely, 2^668870048 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 668870048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (824281920).

668870048 is an abundant number, since it is smaller than the sum of its proper divisors (979693792).

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

668870048 is a wasteful number, since it uses less digits than its factorization.

668870048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 668870048 is about 25862.5220734560. The cubic root of 668870048 is about 874.5418218393.

The spelling of 668870048 in words is "six hundred sixty-eight million, eight hundred seventy thousand, forty-eight".