82457671 has 4 divisors (see below), whose sum is σ = 83107072. Its totient is φ = 81808272.

The previous prime is 82457657. The next prime is 82457681. The reversal of 82457671 is 17675428.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82457671 - 2¹⁷ = 82326599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82457681) 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 3 ways as a sum of consecutive naturals, for example, 324510 + ... + 324763.

It is an arithmetic number, because the mean of its divisors is an integer number (20776768).

Almost surely, 2^82457671 is an apocalyptic number.

82457671 is a deficient number, since it is larger than the sum of its proper divisors (649401).

82457671 is a wasteful number, since it uses less digits than its factorization.

82457671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649400.

The product of its digits is 94080, while the sum is 40.

The square root of 82457671 is about 9080.6206285694. The cubic root of 82457671 is about 435.2549190640.

The spelling of 82457671 in words is "eighty-two million, four hundred fifty-seven thousand, six hundred seventy-one".