9997668013 has 2 divisors, whose sum is σ = 9997668014. Its totient is φ = 9997668012.

The previous prime is 9997667983. The next prime is 9997668029. The reversal of 9997668013 is 3108667999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8551995529 + 1445672484 = 92477^2 + 38022^2 .

It is a cyclic number.

It is not a de Polignac number, because 9997668013 - 2¹³ = 9997659821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9997668073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998834006 + 4998834007.

It is an arithmetic number, because the mean of its divisors is an integer number (4998834007).

Almost surely, 2^9997668013 is an apocalyptic number.

It is an amenable number.

9997668013 is a deficient number, since it is larger than the sum of its proper divisors (1).

9997668013 is an equidigital number, since it uses as much as digits as its factorization.

9997668013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4408992, while the sum is 58.

The square root of 9997668013 is about 99988.3393851503. The cubic root of 9997668013 is about 2154.2672065559.

The spelling of 9997668013 in words is "nine billion, nine hundred ninety-seven million, six hundred sixty-eight thousand, thirteen".