82126613 has 2 divisors, whose sum is σ = 82126614. Its totient is φ = 82126612.

The previous prime is 82126601. The next prime is 82126631. The reversal of 82126613 is 31662128.

Together with next prime (82126631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58874929 + 23251684 = 7673^2 + 4822^2 .

It is a cyclic number.

It is not a de Polignac number, because 82126613 - 2⁶ = 82126549 is a prime.

It is equal to p_4786400 and since 82126613 and 4786400 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82126633) 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, 41063306 + 41063307.

It is an arithmetic number, because the mean of its divisors is an integer number (41063307).

Almost surely, 2^82126613 is an apocalyptic number.

It is an amenable number.

82126613 is a deficient number, since it is larger than the sum of its proper divisors (1).

82126613 is an equidigital number, since it uses as much as digits as its factorization.

82126613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 82126613 is about 9062.3734749788. The cubic root of 82126613 is about 434.6716383997.

The spelling of 82126613 in words is "eighty-two million, one hundred twenty-six thousand, six hundred thirteen".