82744817 has 2 divisors, whose sum is σ = 82744818. Its totient is φ = 82744816.

The previous prime is 82744807. The next prime is 82744841. The reversal of 82744817 is 71844728.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78074896 + 4669921 = 8836^2 + 2161^2 .

It is a cyclic number.

It is not a de Polignac number, because 82744817 - 2⁸ = 82744561 is a prime.

It is not a weakly prime, because it can be changed into another prime (82744807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41372408 + 41372409.

It is an arithmetic number, because the mean of its divisors is an integer number (41372409).

Almost surely, 2^82744817 is an apocalyptic number.

It is an amenable number.

82744817 is a deficient number, since it is larger than the sum of its proper divisors (1).

82744817 is an equidigital number, since it uses as much as digits as its factorization.

82744817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100352, while the sum is 41.

The square root of 82744817 is about 9096.4178114245. The cubic root of 82744817 is about 435.7595695554.

The spelling of 82744817 in words is "eighty-two million, seven hundred forty-four thousand, eight hundred seventeen".