817971682 has 16 divisors (see below), whose sum is σ = 1339041600. Its totient is φ = 371654640.

The previous prime is 817971619. The next prime is 817971683. The reversal of 817971682 is 286179718.

It is not an unprimeable number, because it can be changed into a prime (817971683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62419 + ... + 74377.

It is an arithmetic number, because the mean of its divisors is an integer number (83690100).

Almost surely, 2^817971682 is an apocalyptic number.

817971682 is a deficient number, since it is larger than the sum of its proper divisors (521069918).

817971682 is a wasteful number, since it uses less digits than its factorization.

817971682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15081.

The product of its digits is 338688, while the sum is 49.

The square root of 817971682 is about 28600.2042300400. The cubic root of 817971682 is about 935.2177829697.

The spelling of 817971682 in words is "eight hundred seventeen million, nine hundred seventy-one thousand, six hundred eighty-two".