668286770274 has 224 divisors, whose sum is σ = 1573214883840. Its totient is φ = 212618390400.

The previous prime is 668286770257. The next prime is 668286770297. The reversal of 668286770274 is 472077682866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 813990784 + ... + 813991604.

Almost surely, 2^668286770274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668286770274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (786607441920).

668286770274 is an abundant number, since it is smaller than the sum of its proper divisors (904928113566).

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

668286770274 is a wasteful number, since it uses less digits than its factorization.

668286770274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148 (or 1133 counting only the distinct ones).

The product of its (nonzero) digits is 75866112, while the sum is 63.

The spelling of 668286770274 in words is "six hundred sixty-eight billion, two hundred eighty-six million, seven hundred seventy thousand, two hundred seventy-four".