82568857 has 8 divisors (see below), whose sum is σ = 95773376. Its totient is φ = 69716592.

The previous prime is 82568831. The next prime is 82568861. The reversal of 82568857 is 75886528.

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 a de Polignac number, because none of the positive numbers 2^k-82568857 is a prime.

It is a super-2 number, since 2×82568857² = 13635232292572898, which contains 22 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 82568857.

It is not an unprimeable number, because it can be changed into a prime (82568257) 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, 87558 + ... + 88495.

It is an arithmetic number, because the mean of its divisors is an integer number (11971672).

Almost surely, 2^82568857 is an apocalyptic number.

It is an amenable number.

82568857 is a deficient number, since it is larger than the sum of its proper divisors (13204519).

82568857 is a wasteful number, since it uses less digits than its factorization.

82568857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176127.

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

The square root of 82568857 is about 9086.7407248144. The cubic root of 82568857 is about 435.4504639115.

The spelling of 82568857 in words is "eighty-two million, five hundred sixty-eight thousand, eight hundred fifty-seven".