8636866001 has 2 divisors, whose sum is σ = 8636866002. Its totient is φ = 8636866000.

The previous prime is 8636865971. The next prime is 8636866003. The reversal of 8636866001 is 1006686368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6683226001 + 1953640000 = 81751^2 + 44200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8636866001 is a prime.

It is a super-3 number, since 3×8636866001³ (a number of 31 digits) contains 333 as substring.

Together with 8636866003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8636866003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4318433000 + 4318433001.

It is an arithmetic number, because the mean of its divisors is an integer number (4318433001).

Almost surely, 2^8636866001 is an apocalyptic number.

It is an amenable number.

8636866001 is a deficient number, since it is larger than the sum of its proper divisors (1).

8636866001 is an equidigital number, since it uses as much as digits as its factorization.

8636866001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 8636866001 is about 92934.7405494845. The cubic root of 8636866001 is about 2051.7230012433.

The spelling of 8636866001 in words is "eight billion, six hundred thirty-six million, eight hundred sixty-six thousand, one".