668286576 has 60 divisors (see below), whose sum is σ = 1879753200. Its totient is φ = 221633280.

The previous prime is 668286547. The next prime is 668286617. The reversal of 668286576 is 675682866.

668286576 is a `hidden beast` number, since 6 + 68 + 2 + 8 + 6 + 576 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16996 + ... + 40316.

It is an arithmetic number, because the mean of its divisors is an integer number (31329220).

Almost surely, 2^668286576 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 668286576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939876600).

668286576 is an abundant number, since it is smaller than the sum of its proper divisors (1211466624).

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

668286576 is a wasteful number, since it uses less digits than its factorization.

668286576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23534 (or 23525 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 668286576 is about 25851.2393513348. The cubic root of 668286576 is about 874.2874529908.

The spelling of 668286576 in words is "six hundred sixty-eight million, two hundred eighty-six thousand, five hundred seventy-six".