9901613 has 2 divisors, whose sum is σ = 9901614. Its totient is φ = 9901612.

The previous prime is 9901609. The next prime is 9901627. The reversal of 9901613 is 3161099.

9901613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9132484 + 769129 = 3022^2 + 877^2 .

It is a cyclic number.

It is not a de Polignac number, because 9901613 - 2² = 9901609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9901313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4950806 + 4950807.

It is an arithmetic number, because the mean of its divisors is an integer number (4950807).

Almost surely, 2^9901613 is an apocalyptic number.

It is an amenable number.

9901613 is a deficient number, since it is larger than the sum of its proper divisors (1).

9901613 is an equidigital number, since it uses as much as digits as its factorization.

9901613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 9901613 is about 3146.6828565968. The cubic root of 9901613 is about 214.7345778196.

The spelling of 9901613 in words is "nine million, nine hundred one thousand, six hundred thirteen".