82717471 has 4 divisors (see below), whose sum is σ = 84278232. Its totient is φ = 81156712.

The previous prime is 82717451. The next prime is 82717477. The reversal of 82717471 is 17471728.

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 82717471 - 2¹³ = 82709279 is a prime.

It is a super-3 number, since 3×82717471³ (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 82717471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82717477) 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, 780301 + ... + 780406.

It is an arithmetic number, because the mean of its divisors is an integer number (21069558).

Almost surely, 2^82717471 is an apocalyptic number.

82717471 is a deficient number, since it is larger than the sum of its proper divisors (1560761).

82717471 is a wasteful number, since it uses less digits than its factorization.

82717471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560760.

The product of its digits is 21952, while the sum is 37.

The square root of 82717471 is about 9094.9145680430. The cubic root of 82717471 is about 435.7115601268.

The spelling of 82717471 in words is "eighty-two million, seven hundred seventeen thousand, four hundred seventy-one".