8712605668 has 12 divisors (see below), whose sum is σ = 16419910780. Its totient is φ = 4021202592.

The previous prime is 8712605651. The next prime is 8712605701. The reversal of 8712605668 is 8665062178.

It can be written as a sum of positive squares in 2 ways, for example, as 1395171904 + 7317433764 = 37352^2 + 85542^2 .

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 3 ways as a sum of consecutive naturals, for example, 83775003 + ... + 83775106.

Almost surely, 2^8712605668 is an apocalyptic number.

It is an amenable number.

8712605668 is a deficient number, since it is larger than the sum of its proper divisors (7707305112).

8712605668 is a wasteful number, since it uses less digits than its factorization.

8712605668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167550126 (or 167550124 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 8712605668 is about 93341.3395447055. The cubic root of 8712605668 is about 2057.7029780158.

The spelling of 8712605668 in words is "eight billion, seven hundred twelve million, six hundred five thousand, six hundred sixty-eight".