71686982 has 16 divisors (see below), whose sum is σ = 110717712. Its totient is φ = 34786080.

The previous prime is 71686963. The next prime is 71686991. The reversal of 71686982 is 28968617.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35348 + ... + 37320.

It is an arithmetic number, because the mean of its divisors is an integer number (6919857).

Almost surely, 2^71686982 is an apocalyptic number.

71686982 is a deficient number, since it is larger than the sum of its proper divisors (39030730).

71686982 is a wasteful number, since it uses less digits than its factorization.

71686982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503.

The product of its digits is 290304, while the sum is 47.

The square root of 71686982 is about 8466.8165209836. The cubic root of 71686982 is about 415.4130150591.

The spelling of 71686982 in words is "seventy-one million, six hundred eighty-six thousand, nine hundred eighty-two".