7665663073 has 2 divisors, whose sum is σ = 7665663074. Its totient is φ = 7665663072.

The previous prime is 7665663067. The next prime is 7665663097. The reversal of 7665663073 is 3703665667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7277454864 + 388208209 = 85308^2 + 19703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7665663073 is a prime.

It is a super-3 number, since 3×7665663073³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (7665663013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3832831536 + 3832831537.

It is an arithmetic number, because the mean of its divisors is an integer number (3832831537).

Almost surely, 2^7665663073 is an apocalyptic number.

It is an amenable number.

7665663073 is a deficient number, since it is larger than the sum of its proper divisors (1).

7665663073 is an equidigital number, since it uses as much as digits as its factorization.

7665663073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2857680, while the sum is 49.

The square root of 7665663073 is about 87553.7724658395. The cubic root of 7665663073 is about 1971.7411897693.

The spelling of 7665663073 in words is "seven billion, six hundred sixty-five million, six hundred sixty-three thousand, seventy-three".