7664315647 has 2 divisors, whose sum is σ = 7664315648. Its totient is φ = 7664315646.

The previous prime is 7664315641. The next prime is 7664315669. The reversal of 7664315647 is 7465134667.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7664315647 - 2¹¹ = 7664313599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7664315647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7664315641) 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 as a sum of consecutive naturals, namely, 3832157823 + 3832157824.

It is an arithmetic number, because the mean of its divisors is an integer number (3832157824).

Almost surely, 2^7664315647 is an apocalyptic number.

7664315647 is a deficient number, since it is larger than the sum of its proper divisors (1).

7664315647 is an equidigital number, since it uses as much as digits as its factorization.

7664315647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 49.

The square root of 7664315647 is about 87546.0772793390. The cubic root of 7664315647 is about 1971.6256559053.

The spelling of 7664315647 in words is "seven billion, six hundred sixty-four million, three hundred fifteen thousand, six hundred forty-seven".