8668021337 has 2 divisors, whose sum is σ = 8668021338. Its totient is φ = 8668021336.

The previous prime is 8668021333. The next prime is 8668021361. The reversal of 8668021337 is 7331208668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6904945216 + 1763076121 = 83096^2 + 41989^2 .

It is a cyclic number.

It is not a de Polignac number, because 8668021337 - 2² = 8668021333 is a prime.

It is not a weakly prime, because it can be changed into another prime (8668021333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4334010668 + 4334010669.

It is an arithmetic number, because the mean of its divisors is an integer number (4334010669).

Almost surely, 2^8668021337 is an apocalyptic number.

It is an amenable number.

8668021337 is a deficient number, since it is larger than the sum of its proper divisors (1).

8668021337 is an equidigital number, since it uses as much as digits as its factorization.

8668021337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 8668021337 is about 93102.2090876473. The cubic root of 8668021337 is about 2054.1870668011.

The spelling of 8668021337 in words is "eight billion, six hundred sixty-eight million, twenty-one thousand, three hundred thirty-seven".