82368709 has 2 divisors, whose sum is σ = 82368710. Its totient is φ = 82368708.

The previous prime is 82368701. The next prime is 82368719. The reversal of 82368709 is 90786328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42640900 + 39727809 = 6530^2 + 6303^2 .

It is a cyclic number.

It is not a de Polignac number, because 82368709 - 2³ = 82368701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82368701) 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, 41184354 + 41184355.

It is an arithmetic number, because the mean of its divisors is an integer number (41184355).

Almost surely, 2^82368709 is an apocalyptic number.

It is an amenable number.

82368709 is a deficient number, since it is larger than the sum of its proper divisors (1).

82368709 is an equidigital number, since it uses as much as digits as its factorization.

82368709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 82368709 is about 9075.7208529130. The cubic root of 82368709 is about 435.0983333429.

The spelling of 82368709 in words is "eighty-two million, three hundred sixty-eight thousand, seven hundred nine".