82871617 has 6 divisors (see below), whose sum is σ = 88033478. Its totient is φ = 77996544.

The previous prime is 82871609. The next prime is 82871627. The reversal of 82871617 is 71617828.

It can be written as a sum of positive squares in 3 ways, for example, as 11029041 + 71842576 = 3321^2 + 8476^2 .

It is not a de Polignac number, because 82871617 - 2³ = 82871609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82871617.

It is not an unprimeable number, because it can be changed into a prime (82871627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 143088 + ... + 143665.

Almost surely, 2^82871617 is an apocalyptic number.

It is an amenable number.

82871617 is a deficient number, since it is larger than the sum of its proper divisors (5161861).

82871617 is a wasteful number, since it uses less digits than its factorization.

82871617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286787 (or 286770 counting only the distinct ones).

The product of its digits is 37632, while the sum is 40.

The square root of 82871617 is about 9103.3849199075. The cubic root of 82871617 is about 435.9820451743.

The spelling of 82871617 in words is "eighty-two million, eight hundred seventy-one thousand, six hundred seventeen".