82707917 has 2 divisors, whose sum is σ = 82707918. Its totient is φ = 82707916.

The previous prime is 82707899. The next prime is 82707959. The reversal of 82707917 is 71970728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44342281 + 38365636 = 6659^2 + 6194^2 .

It is a cyclic number.

It is not a de Polignac number, because 82707917 - 2⁶ = 82707853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82797917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41353958 + 41353959.

It is an arithmetic number, because the mean of its divisors is an integer number (41353959).

Almost surely, 2^82707917 is an apocalyptic number.

It is an amenable number.

82707917 is a deficient number, since it is larger than the sum of its proper divisors (1).

82707917 is an equidigital number, since it uses as much as digits as its factorization.

82707917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 82707917 is about 9094.3893142970. The cubic root of 82707917 is about 435.6947843539.

The spelling of 82707917 in words is "eighty-two million, seven hundred seven thousand, nine hundred seventeen".