7664318663 has 2 divisors, whose sum is σ = 7664318664. Its totient is φ = 7664318662.

The previous prime is 7664318617. The next prime is 7664318671. The reversal of 7664318663 is 3668134667.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7664318663 - 2²² = 7660124359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7664318603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3832159331 + 3832159332.

It is an arithmetic number, because the mean of its divisors is an integer number (3832159332).

Almost surely, 2^7664318663 is an apocalyptic number.

7664318663 is a deficient number, since it is larger than the sum of its proper divisors (1).

7664318663 is an equidigital number, since it uses as much as digits as its factorization.

7664318663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 50.

The square root of 7664318663 is about 87546.0945045523. The cubic root of 7664318663 is about 1971.6259145248.

The spelling of 7664318663 in words is "seven billion, six hundred sixty-four million, three hundred eighteen thousand, six hundred sixty-three".