8721712607 has 2 divisors, whose sum is σ = 8721712608. Its totient is φ = 8721712606.

The previous prime is 8721712547. The next prime is 8721712651. The reversal of 8721712607 is 7062171278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8721712607 - 2⁶ = 8721712543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8721712697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4360856303 + 4360856304.

It is an arithmetic number, because the mean of its divisors is an integer number (4360856304).

Almost surely, 2^8721712607 is an apocalyptic number.

8721712607 is a deficient number, since it is larger than the sum of its proper divisors (1).

8721712607 is an equidigital number, since it uses as much as digits as its factorization.

8721712607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 41.

The square root of 8721712607 is about 93390.1097922044. The cubic root of 8721712607 is about 2058.4196732974.

The spelling of 8721712607 in words is "eight billion, seven hundred twenty-one million, seven hundred twelve thousand, six hundred seven".