82471663 has 4 divisors (see below), whose sum is σ = 82624648. Its totient is φ = 82318680.

The previous prime is 82471639. The next prime is 82471673. The reversal of 82471663 is 36617428.

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 82471663 - 2¹³ = 82463471 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 (82471603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75681 + ... + 76762.

It is an arithmetic number, because the mean of its divisors is an integer number (20656162).

Almost surely, 2^82471663 is an apocalyptic number.

82471663 is a deficient number, since it is larger than the sum of its proper divisors (152985).

82471663 is a wasteful number, since it uses less digits than its factorization.

82471663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152984.

The product of its digits is 48384, while the sum is 37.

The square root of 82471663 is about 9081.3910278107. The cubic root of 82471663 is about 435.2795367146.

The spelling of 82471663 in words is "eighty-two million, four hundred seventy-one thousand, six hundred sixty-three".