82069471 has 4 divisors (see below), whose sum is σ = 89530344. Its totient is φ = 74608600.

The previous prime is 82069459. The next prime is 82069511. The reversal of 82069471 is 17496028.

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

It is not a de Polignac number, because 82069471 - 2¹³ = 82061279 is a prime.

It is a super-3 number, since 3×82069471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82069471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82069271) 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, 3730420 + ... + 3730441.

It is an arithmetic number, because the mean of its divisors is an integer number (22382586).

Almost surely, 2^82069471 is an apocalyptic number.

82069471 is a deficient number, since it is larger than the sum of its proper divisors (7460873).

82069471 is a wasteful number, since it uses less digits than its factorization.

82069471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7460872.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 82069471 is about 9059.2202203059. The cubic root of 82069471 is about 434.5708031622.

The spelling of 82069471 in words is "eighty-two million, sixty-nine thousand, four hundred seventy-one".