83688713 has 2 divisors, whose sum is σ = 83688714. Its totient is φ = 83688712.

The previous prime is 83688677. The next prime is 83688721. The reversal of 83688713 is 31788638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83685904 + 2809 = 9148^2 + 53^2 .

It is a cyclic number.

It is not a de Polignac number, because 83688713 - 2⁸ = 83688457 is a prime.

It is not a weakly prime, because it can be changed into another prime (83688763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41844356 + 41844357.

It is an arithmetic number, because the mean of its divisors is an integer number (41844357).

Almost surely, 2^83688713 is an apocalyptic number.

It is an amenable number.

83688713 is a deficient number, since it is larger than the sum of its proper divisors (1).

83688713 is an equidigital number, since it uses as much as digits as its factorization.

83688713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 83688713 is about 9148.1535295381. The cubic root of 83688713 is about 437.4102572934.

The spelling of 83688713 in words is "eighty-three million, six hundred eighty-eight thousand, seven hundred thirteen".