82777873 has 2 divisors, whose sum is σ = 82777874. Its totient is φ = 82777872.

The previous prime is 82777853. The next prime is 82777931. The reversal of 82777873 is 37877728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82573569 + 204304 = 9087^2 + 452^2 .

It is a cyclic number.

It is not a de Polignac number, because 82777873 - 2⁵ = 82777841 is a prime.

It is not a weakly prime, because it can be changed into another prime (82777853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41388936 + 41388937.

It is an arithmetic number, because the mean of its divisors is an integer number (41388937).

Almost surely, 2^82777873 is an apocalyptic number.

It is an amenable number.

82777873 is a deficient number, since it is larger than the sum of its proper divisors (1).

82777873 is an equidigital number, since it uses as much as digits as its factorization.

82777873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 921984, while the sum is 49.

The square root of 82777873 is about 9098.2346089777. The cubic root of 82777873 is about 435.8175895060.

The spelling of 82777873 in words is "eighty-two million, seven hundred seventy-seven thousand, eight hundred seventy-three".