82609771 has 2 divisors, whose sum is σ = 82609772. Its totient is φ = 82609770.

The previous prime is 82609757. The next prime is 82609801. The reversal of 82609771 is 17790628.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82609771 - 2⁷ = 82609643 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82609871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41304885 + 41304886.

It is an arithmetic number, because the mean of its divisors is an integer number (41304886).

Almost surely, 2^82609771 is an apocalyptic number.

82609771 is a deficient number, since it is larger than the sum of its proper divisors (1).

82609771 is an equidigital number, since it uses as much as digits as its factorization.

82609771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 82609771 is about 9088.9917482634. The cubic root of 82609771 is about 435.5223759255.

The spelling of 82609771 in words is "eighty-two million, six hundred nine thousand, seven hundred seventy-one".