82687417 has 2 divisors, whose sum is σ = 82687418. Its totient is φ = 82687416.

The previous prime is 82687399. The next prime is 82687421. The reversal of 82687417 is 71478628.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62157456 + 20529961 = 7884^2 + 4531^2 .

It is a cyclic number.

It is not a de Polignac number, because 82687417 - 2⁷ = 82687289 is a prime.

It is not a weakly prime, because it can be changed into another prime (82687427) 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, 41343708 + 41343709.

It is an arithmetic number, because the mean of its divisors is an integer number (41343709).

Almost surely, 2^82687417 is an apocalyptic number.

It is an amenable number.

82687417 is a deficient number, since it is larger than the sum of its proper divisors (1).

82687417 is an equidigital number, since it uses as much as digits as its factorization.

82687417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 43.

The square root of 82687417 is about 9093.2621759190. The cubic root of 82687417 is about 435.6587842488.

The spelling of 82687417 in words is "eighty-two million, six hundred eighty-seven thousand, four hundred seventeen".