82864517 has 2 divisors, whose sum is σ = 82864518. Its totient is φ = 82864516.

The previous prime is 82864489. The next prime is 82864531. The reversal of 82864517 is 71546828.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75498721 + 7365796 = 8689^2 + 2714^2 .

It is a cyclic number.

It is not a de Polignac number, because 82864517 - 2¹⁰ = 82863493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82864577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41432258 + 41432259.

It is an arithmetic number, because the mean of its divisors is an integer number (41432259).

Almost surely, 2^82864517 is an apocalyptic number.

It is an amenable number.

82864517 is a deficient number, since it is larger than the sum of its proper divisors (1).

82864517 is an equidigital number, since it uses as much as digits as its factorization.

82864517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 41.

The square root of 82864517 is about 9102.9949467195. The cubic root of 82864517 is about 435.9695939433.

The spelling of 82864517 in words is "eighty-two million, eight hundred sixty-four thousand, five hundred seventeen".