82778363 has 2 divisors, whose sum is σ = 82778364. Its totient is φ = 82778362.

The previous prime is 82778347. The next prime is 82778387. The reversal of 82778363 is 36387728.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82778363 - 2⁴ = 82778347 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82778323) 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, 41389181 + 41389182.

It is an arithmetic number, because the mean of its divisors is an integer number (41389182).

Almost surely, 2^82778363 is an apocalyptic number.

82778363 is a deficient number, since it is larger than the sum of its proper divisors (1).

82778363 is an equidigital number, since it uses as much as digits as its factorization.

82778363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 44.

The square root of 82778363 is about 9098.2615372389. The cubic root of 82778363 is about 435.8184494387.

The spelling of 82778363 in words is "eighty-two million, seven hundred seventy-eight thousand, three hundred sixty-three".