82122647 has 16 divisors (see below), whose sum is σ = 87639552. Its totient is φ = 76839840.

The previous prime is 82122643. The next prime is 82122659. The reversal of 82122647 is 74622128.

It is a cyclic number.

It is not a de Polignac number, because 82122647 - 2² = 82122643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82122641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112598 + ... + 113324.

It is an arithmetic number, because the mean of its divisors is an integer number (5477472).

Almost surely, 2^82122647 is an apocalyptic number.

82122647 is a deficient number, since it is larger than the sum of its proper divisors (5516905).

82122647 is a wasteful number, since it uses less digits than its factorization.

82122647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878.

The product of its digits is 10752, while the sum is 32.

The square root of 82122647 is about 9062.1546554889. The cubic root of 82122647 is about 434.6646413358.

The spelling of 82122647 in words is "eighty-two million, one hundred twenty-two thousand, six hundred forty-seven".