82071671 has 8 divisors (see below), whose sum is σ = 90127488. Its totient is φ = 74115000.

The previous prime is 82071667. The next prime is 82071673. The reversal of 82071671 is 17617028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82071671 - 2² = 82071667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82071673) by changing a digit.

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, 23045 + ... + 26366.

It is an arithmetic number, because the mean of its divisors is an integer number (11265936).

Almost surely, 2^82071671 is an apocalyptic number.

82071671 is a deficient number, since it is larger than the sum of its proper divisors (8055817).

82071671 is a wasteful number, since it uses less digits than its factorization.

82071671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49573.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 82071671 is about 9059.3416427465. The cubic root of 82071671 is about 434.5746862433.

Adding to 82071671 its reverse (17617028), we get a palindrome (99688699).

The spelling of 82071671 in words is "eighty-two million, seventy-one thousand, six hundred seventy-one".