82358609 has 2 divisors, whose sum is σ = 82358610. Its totient is φ = 82358608.

The previous prime is 82358603. The next prime is 82358621. The reversal of 82358609 is 90685328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42315025 + 40043584 = 6505^2 + 6328^2 .

It is a cyclic number.

It is not a de Polignac number, because 82358609 - 2⁴ = 82358593 is a prime.

It is not a weakly prime, because it can be changed into another prime (82358603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41179304 + 41179305.

It is an arithmetic number, because the mean of its divisors is an integer number (41179305).

Almost surely, 2^82358609 is an apocalyptic number.

It is an amenable number.

82358609 is a deficient number, since it is larger than the sum of its proper divisors (1).

82358609 is an equidigital number, since it uses as much as digits as its factorization.

82358609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 82358609 is about 9075.1644062243. The cubic root of 82358609 is about 435.0805487867.

The spelling of 82358609 in words is "eighty-two million, three hundred fifty-eight thousand, six hundred nine".