9912613 has 2 divisors, whose sum is σ = 9912614. Its totient is φ = 9912612.

The previous prime is 9912599. The next prime is 9912631. The reversal of 9912613 is 3162199.

Together with next prime (9912631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6385729 + 3526884 = 2527^2 + 1878^2 .

It is a cyclic number.

It is not a de Polignac number, because 9912613 - 2⁹ = 9912101 is a prime.

9912613 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9912313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4956306 + 4956307.

It is an arithmetic number, because the mean of its divisors is an integer number (4956307).

Almost surely, 2^9912613 is an apocalyptic number.

It is an amenable number.

9912613 is a deficient number, since it is larger than the sum of its proper divisors (1).

9912613 is an equidigital number, since it uses as much as digits as its factorization.

9912613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 31.

The square root of 9912613 is about 3148.4302437882. The cubic root of 9912613 is about 214.8140667606.

The spelling of 9912613 in words is "nine million, nine hundred twelve thousand, six hundred thirteen".