82006669 has 2 divisors, whose sum is σ = 82006670. Its totient is φ = 82006668.

The previous prime is 82006663. The next prime is 82006703. The reversal of 82006669 is 96660028.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51337225 + 30669444 = 7165^2 + 5538^2 .

It is a cyclic number.

It is not a de Polignac number, because 82006669 - 2⁹ = 82006157 is a prime.

It is a super-2 number, since 2×82006669² = 13450187520951122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82006663) 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, 41003334 + 41003335.

It is an arithmetic number, because the mean of its divisors is an integer number (41003335).

Almost surely, 2^82006669 is an apocalyptic number.

It is an amenable number.

82006669 is a deficient number, since it is larger than the sum of its proper divisors (1).

82006669 is an equidigital number, since it uses as much as digits as its factorization.

82006669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 82006669 is about 9055.7533645744. The cubic root of 82006669 is about 434.4599260409.

The spelling of 82006669 in words is "eighty-two million, six thousand, six hundred sixty-nine".