668780210296 has 24 divisors (see below), whose sum is σ = 1378322852760. Its totient is φ = 303991004240.

The previous prime is 668780210279. The next prime is 668780210297. The reversal of 668780210296 is 692012087866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668780210297) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 345443356 + ... + 345445291.

It is an arithmetic number, because the mean of its divisors is an integer number (57430118865).

Almost surely, 2^668780210296 is an apocalyptic number.

It is an amenable number.

668780210296 is an abundant number, since it is smaller than the sum of its proper divisors (709542642464).

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

668780210296 is a wasteful number, since it uses less digits than its factorization.

668780210296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690888675 (or 690888660 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 668780210296 in words is "six hundred sixty-eight billion, seven hundred eighty million, two hundred ten thousand, two hundred ninety-six".