8663886397 has 2 divisors, whose sum is σ = 8663886398. Its totient is φ = 8663886396.

The previous prime is 8663886383. The next prime is 8663886419. The reversal of 8663886397 is 7936883668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6301343161 + 2362543236 = 79381^2 + 48606^2 .

It is a cyclic number.

It is not a de Polignac number, because 8663886397 - 2⁷ = 8663886269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8663886317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4331943198 + 4331943199.

It is an arithmetic number, because the mean of its divisors is an integer number (4331943199).

Almost surely, 2^8663886397 is an apocalyptic number.

It is an amenable number.

8663886397 is a deficient number, since it is larger than the sum of its proper divisors (1).

8663886397 is an equidigital number, since it uses as much as digits as its factorization.

8663886397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62705664, while the sum is 64.

The square root of 8663886397 is about 93079.9999838848. Note that the first 4 decimals coincide. The cubic root of 8663886397 is about 2053.8603758940.

The spelling of 8663886397 in words is "eight billion, six hundred sixty-three million, eight hundred eighty-six thousand, three hundred ninety-seven".