668676896 has 48 divisors (see below), whose sum is σ = 1390919040. Its totient is φ = 315920640.

The previous prime is 668676859. The next prime is 668676917. The reversal of 668676896 is 698676866.

668676896 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 7 ways as a sum of consecutive naturals, for example, 35951 + ... + 51281.

It is an arithmetic number, because the mean of its divisors is an integer number (28977480).

Almost surely, 2^668676896 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 668676896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (695459520).

668676896 is an abundant number, since it is smaller than the sum of its proper divisors (722242144).

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

668676896 is a wasteful number, since it uses less digits than its factorization.

668676896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15417 (or 15409 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 62.

The square root of 668676896 is about 25858.7875972560. The cubic root of 668676896 is about 874.4576322099.

The spelling of 668676896 in words is "six hundred sixty-eight million, six hundred seventy-six thousand, eight hundred ninety-six".