82560869 has 4 divisors (see below), whose sum is σ = 86150496. Its totient is φ = 78971244.

The previous prime is 82560853. The next prime is 82560901. The reversal of 82560869 is 96806528.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 82560869 - 2⁴ = 82560853 is a prime.

It is a super-3 number, since 3×82560869³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82560169) 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, 1794779 + ... + 1794824.

It is an arithmetic number, because the mean of its divisors is an integer number (21537624).

Almost surely, 2^82560869 is an apocalyptic number.

It is an amenable number.

82560869 is a deficient number, since it is larger than the sum of its proper divisors (3589627).

82560869 is a wasteful number, since it uses less digits than its factorization.

82560869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3589626.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 82560869 is about 9086.3011726445. The cubic root of 82560869 is about 435.4364211250.

The spelling of 82560869 in words is "eighty-two million, five hundred sixty thousand, eight hundred sixty-nine".