82068281 has 8 divisors (see below), whose sum is σ = 83356800. Its totient is φ = 80786160.

The previous prime is 82068271. The next prime is 82068313. The reversal of 82068281 is 18286028.

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 82068281 - 2²² = 77873977 is a prime.

It is a super-2 number, since 2×82068281² = 13470405492589922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82068211) 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, 28571 + ... + 31311.

It is an arithmetic number, because the mean of its divisors is an integer number (10419600).

Almost surely, 2^82068281 is an apocalyptic number.

It is an amenable number.

82068281 is a deficient number, since it is larger than the sum of its proper divisors (1288519).

82068281 is a wasteful number, since it uses less digits than its factorization.

82068281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 82068281 is about 9059.1545411258. The cubic root of 82068281 is about 434.5687027394.

The spelling of 82068281 in words is "eighty-two million, sixty-eight thousand, two hundred eighty-one".