82465609 has 2 divisors, whose sum is σ = 82465610. Its totient is φ = 82465608.

The previous prime is 82465601. The next prime is 82465627. The reversal of 82465609 is 90656428.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75690000 + 6775609 = 8700^2 + 2603^2 .

It is a cyclic number.

It is not a de Polignac number, because 82465609 - 2³ = 82465601 is a prime.

It is not a weakly prime, because it can be changed into another prime (82465601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41232804 + 41232805.

It is an arithmetic number, because the mean of its divisors is an integer number (41232805).

Almost surely, 2^82465609 is an apocalyptic number.

It is an amenable number.

82465609 is a deficient number, since it is larger than the sum of its proper divisors (1).

82465609 is an equidigital number, since it uses as much as digits as its factorization.

82465609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 82465609 is about 9081.0577027128. The cubic root of 82465609 is about 435.2688855943.

The spelling of 82465609 in words is "eighty-two million, four hundred sixty-five thousand, six hundred nine".