9997613 has 2 divisors, whose sum is σ = 9997614. Its totient is φ = 9997612.

The previous prime is 9997601. The next prime is 9997621. The reversal of 9997613 is 3167999.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9972964 + 24649 = 3158^2 + 157^2 .

It is an emirp because it is prime and its reverse (3167999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9997613 - 2⁴ = 9997597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9997643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998806 + 4998807.

It is an arithmetic number, because the mean of its divisors is an integer number (4998807).

Almost surely, 2^9997613 is an apocalyptic number.

It is an amenable number.

9997613 is a deficient number, since it is larger than the sum of its proper divisors (1).

9997613 is an equidigital number, since it uses as much as digits as its factorization.

9997613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91854, while the sum is 44.

The square root of 9997613 is about 3161.9002198045. The cubic root of 9997613 is about 215.4263255204.

The spelling of 9997613 in words is "nine million, nine hundred ninety-seven thousand, six hundred thirteen".