82771473 has 4 divisors (see below), whose sum is σ = 110361968. Its totient is φ = 55180980.

The previous prime is 82771459. The next prime is 82771489. The reversal of 82771473 is 37417728.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 82771473 - 2²⁰ = 81722897 is a prime.

It is a super-2 number, since 2×82771473² = 13702233485179458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82771373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13795243 + ... + 13795248.

It is an arithmetic number, because the mean of its divisors is an integer number (27590492).

Almost surely, 2^82771473 is an apocalyptic number.

It is an amenable number.

82771473 is a deficient number, since it is larger than the sum of its proper divisors (27590495).

82771473 is a wasteful number, since it uses less digits than its factorization.

82771473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27590494.

The product of its digits is 65856, while the sum is 39.

The square root of 82771473 is about 9097.8828855949. The cubic root of 82771473 is about 435.8063574205.

The spelling of 82771473 in words is "eighty-two million, seven hundred seventy-one thousand, four hundred seventy-three".