83065813 has 2 divisors, whose sum is σ = 83065814. Its totient is φ = 83065812.

The previous prime is 83065799. The next prime is 83065837. The reversal of 83065813 is 31856038.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83046769 + 19044 = 9113^2 + 138^2 .

It is a cyclic number.

It is not a de Polignac number, because 83065813 - 2²¹ = 80968661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83165813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41532906 + 41532907.

It is an arithmetic number, because the mean of its divisors is an integer number (41532907).

Almost surely, 2^83065813 is an apocalyptic number.

It is an amenable number.

83065813 is a deficient number, since it is larger than the sum of its proper divisors (1).

83065813 is an equidigital number, since it uses as much as digits as its factorization.

83065813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 83065813 is about 9114.0448210441. The cubic root of 83065813 is about 436.3223302428.

The spelling of 83065813 in words is "eighty-three million, sixty-five thousand, eight hundred thirteen".