7664318617 has 2 divisors, whose sum is σ = 7664318618. Its totient is φ = 7664318616.

The previous prime is 7664318609. The next prime is 7664318663. The reversal of 7664318617 is 7168134667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4822469136 + 2841849481 = 69444^2 + 53309^2 .

It is a cyclic number.

It is not a de Polignac number, because 7664318617 - 2³ = 7664318609 is a prime.

It is a super-3 number, since 3×7664318617³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (7664318017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3832159308 + 3832159309.

It is an arithmetic number, because the mean of its divisors is an integer number (3832159309).

Almost surely, 2^7664318617 is an apocalyptic number.

It is an amenable number.

7664318617 is a deficient number, since it is larger than the sum of its proper divisors (1).

7664318617 is an equidigital number, since it uses as much as digits as its factorization.

7664318617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 49.

The square root of 7664318617 is about 87546.0942418335. The cubic root of 7664318617 is about 1971.6259105803.

The spelling of 7664318617 in words is "seven billion, six hundred sixty-four million, three hundred eighteen thousand, six hundred seventeen".