82845471 has 16 divisors (see below), whose sum is σ = 122045184. Its totient is φ = 49720704.

The previous prime is 82845467. The next prime is 82845473. The reversal of 82845471 is 17454828.

It is a happy number.

It is not a de Polignac number, because 82845471 - 2² = 82845467 is a prime.

It is a super-3 number, since 3×82845471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82845473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34141 + ... + 36486.

It is an arithmetic number, because the mean of its divisors is an integer number (7627824).

Almost surely, 2^82845471 is an apocalyptic number.

82845471 is a deficient number, since it is larger than the sum of its proper divisors (39199713).

82845471 is a wasteful number, since it uses less digits than its factorization.

82845471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70670.

The product of its digits is 71680, while the sum is 39.

The square root of 82845471 is about 9101.9487473837. The cubic root of 82845471 is about 435.9361895645.

The spelling of 82845471 in words is "eighty-two million, eight hundred forty-five thousand, four hundred seventy-one".