83710813 has 2 divisors, whose sum is σ = 83710814. Its totient is φ = 83710812.

The previous prime is 83710787. The next prime is 83710817. The reversal of 83710813 is 31801738.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79602084 + 4108729 = 8922^2 + 2027^2 .

It is a cyclic number.

It is not a de Polignac number, because 83710813 - 2⁹ = 83710301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83710817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41855406 + 41855407.

It is an arithmetic number, because the mean of its divisors is an integer number (41855407).

Almost surely, 2^83710813 is an apocalyptic number.

It is an amenable number.

83710813 is a deficient number, since it is larger than the sum of its proper divisors (1).

83710813 is an equidigital number, since it uses as much as digits as its factorization.

83710813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 83710813 is about 9149.3613438316. The cubic root of 83710813 is about 437.4487567738.

The spelling of 83710813 in words is "eighty-three million, seven hundred ten thousand, eight hundred thirteen".