82002649 has 2 divisors, whose sum is σ = 82002650. Its totient is φ = 82002648.

The previous prime is 82002637. The next prime is 82002653. The reversal of 82002649 is 94620028.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79655625 + 2347024 = 8925^2 + 1532^2 .

It is a cyclic number.

It is not a de Polignac number, because 82002649 - 2¹¹ = 82000601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82002649.

It is not a weakly prime, because it can be changed into another prime (82002149) 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, 41001324 + 41001325.

It is an arithmetic number, because the mean of its divisors is an integer number (41001325).

Almost surely, 2^82002649 is an apocalyptic number.

It is an amenable number.

82002649 is a deficient number, since it is larger than the sum of its proper divisors (1).

82002649 is an equidigital number, since it uses as much as digits as its factorization.

82002649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 82002649 is about 9055.5314035124. The cubic root of 82002649 is about 434.4528267913.

The spelling of 82002649 in words is "eighty-two million, two thousand, six hundred forty-nine".