83401613 has 2 divisors, whose sum is σ = 83401614. Its totient is φ = 83401612.

The previous prime is 83401607. The next prime is 83401631. The reversal of 83401613 is 31610438.

Together with next prime (83401631) 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., 81956809 + 1444804 = 9053^2 + 1202^2 .

It is a cyclic number.

It is not a de Polignac number, because 83401613 - 2⁴ = 83401597 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 (83401673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41700806 + 41700807.

It is an arithmetic number, because the mean of its divisors is an integer number (41700807).

Almost surely, 2^83401613 is an apocalyptic number.

It is an amenable number.

83401613 is a deficient number, since it is larger than the sum of its proper divisors (1).

83401613 is an equidigital number, since it uses as much as digits as its factorization.

83401613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 83401613 is about 9132.4483573684. The cubic root of 83401613 is about 436.9094953670.

The spelling of 83401613 in words is "eighty-three million, four hundred one thousand, six hundred thirteen".