83623613 has 2 divisors, whose sum is σ = 83623614. Its totient is φ = 83623612.

The previous prime is 83623597. The next prime is 83623643. The reversal of 83623613 is 31632638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56145049 + 27478564 = 7493^2 + 5242^2 .

It is a cyclic number.

It is not a de Polignac number, because 83623613 - 2⁴ = 83623597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83623613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83623643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41811806 + 41811807.

It is an arithmetic number, because the mean of its divisors is an integer number (41811807).

Almost surely, 2^83623613 is an apocalyptic number.

It is an amenable number.

83623613 is a deficient number, since it is larger than the sum of its proper divisors (1).

83623613 is an equidigital number, since it uses as much as digits as its factorization.

83623613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 32.

The square root of 83623613 is about 9144.5947422507. The cubic root of 83623613 is about 437.2968099182.

The spelling of 83623613 in words is "eighty-three million, six hundred twenty-three thousand, six hundred thirteen".