82797787 has 2 divisors, whose sum is σ = 82797788. Its totient is φ = 82797786.

The previous prime is 82797773. The next prime is 82797791. The reversal of 82797787 is 78779728.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82797787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82797727) 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, 41398893 + 41398894.

It is an arithmetic number, because the mean of its divisors is an integer number (41398894).

Almost surely, 2^82797787 is an apocalyptic number.

82797787 is the 5254-th hex number.

82797787 is a deficient number, since it is larger than the sum of its proper divisors (1).

82797787 is an equidigital number, since it uses as much as digits as its factorization.

82797787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2765952, while the sum is 55.

The square root of 82797787 is about 9099.3289313004. The cubic root of 82797787 is about 435.8525351394.

It can be divided in two parts, 8 and 2797787, that added together give a triangular number (2797795 = T₂₃₆₅).

The spelling of 82797787 in words is "eighty-two million, seven hundred ninety-seven thousand, seven hundred eighty-seven".