82791773 has 2 divisors, whose sum is σ = 82791774. Its totient is φ = 82791772.

The previous prime is 82791767. The next prime is 82791817. The reversal of 82791773 is 37719728.

It is an a-pointer prime, because the next prime (82791817) can be obtained adding 82791773 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80317444 + 2474329 = 8962^2 + 1573^2 .

It is a cyclic number.

It is not a de Polignac number, because 82791773 - 2⁴ = 82791757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82791073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41395886 + 41395887.

It is an arithmetic number, because the mean of its divisors is an integer number (41395887).

Almost surely, 2^82791773 is an apocalyptic number.

It is an amenable number.

82791773 is a deficient number, since it is larger than the sum of its proper divisors (1).

82791773 is an equidigital number, since it uses as much as digits as its factorization.

82791773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 44.

The square root of 82791773 is about 9098.9984613693. The cubic root of 82791773 is about 435.8419821979.

The spelling of 82791773 in words is "eighty-two million, seven hundred ninety-one thousand, seven hundred seventy-three".