82207649 has 2 divisors, whose sum is σ = 82207650. Its totient is φ = 82207648.

The previous prime is 82207627. The next prime is 82207651. The reversal of 82207649 is 94670228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81126049 + 1081600 = 9007^2 + 1040^2 .

It is a cyclic number.

It is not a de Polignac number, because 82207649 - 2¹² = 82203553 is a prime.

Together with 82207651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82207679) 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, 41103824 + 41103825.

It is an arithmetic number, because the mean of its divisors is an integer number (41103825).

Almost surely, 2^82207649 is an apocalyptic number.

It is an amenable number.

82207649 is a deficient number, since it is larger than the sum of its proper divisors (1).

82207649 is an equidigital number, since it uses as much as digits as its factorization.

82207649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 82207649 is about 9066.8433867582. The cubic root of 82207649 is about 434.8145578527.

The spelling of 82207649 in words is "eighty-two million, two hundred seven thousand, six hundred forty-nine".