82565887 has 8 divisors (see below), whose sum is σ = 88761600. Its totient is φ = 76555224.

The previous prime is 82565867. The next prime is 82565893. The reversal of 82565887 is 78856528.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82565887 - 2¹¹ = 82563839 is a prime.

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 82565887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82565867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45337 + ... + 47122.

It is an arithmetic number, because the mean of its divisors is an integer number (11095200).

Almost surely, 2^82565887 is an apocalyptic number.

82565887 is a deficient number, since it is larger than the sum of its proper divisors (6195713).

82565887 is a wasteful number, since it uses less digits than its factorization.

82565887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92525.

The product of its digits is 1075200, while the sum is 49.

The square root of 82565887 is about 9086.5772984111. The cubic root of 82565887 is about 435.4452428010.

The spelling of 82565887 in words is "eighty-two million, five hundred sixty-five thousand, eight hundred eighty-seven".