668847004 has 48 divisors (see below), whose sum is σ = 1354062528. Its totient is φ = 283166208.

The previous prime is 668846993. The next prime is 668847017. The reversal of 668847004 is 400748866.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1023942 + ... + 1024594.

It is an arithmetic number, because the mean of its divisors is an integer number (28209636).

Almost surely, 2^668847004 is an apocalyptic number.

It is an amenable number.

668847004 is an abundant number, since it is smaller than the sum of its proper divisors (685215524).

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

668847004 is a wasteful number, since it uses less digits than its factorization.

668847004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 668847004 is about 25862.0765600908. The cubic root of 668847004 is about 874.5317784469.

The spelling of 668847004 in words is "six hundred sixty-eight million, eight hundred forty-seven thousand, four".