666666703700 has 36 divisors (see below), whose sum is σ = 1446819077340. Its totient is φ = 266638602240.

The previous prime is 666666703699. The next prime is 666666703751. The reversal of 666666703700 is 7307666666.

It can be written as a sum of positive squares in 6 ways, for example, as 52640878096 + 614025825604 = 229436^2 + 783598^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 616724 + ... + 1309076.

It is an arithmetic number, because the mean of its divisors is an integer number (40189418815).

Almost surely, 2^666666703700 is an apocalyptic number.

It is an amenable number.

666666703700 is an abundant number, since it is smaller than the sum of its proper divisors (780152373640).

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

666666703700 is a wasteful number, since it uses less digits than its factorization.

666666703700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701996 (or 701989 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 53.

The spelling of 666666703700 in words is "six hundred sixty-six billion, six hundred sixty-six million, seven hundred three thousand, seven hundred".