82077111 has 16 divisors (see below), whose sum is σ = 122488800. Its totient is φ = 54316224.

The previous prime is 82077103. The next prime is 82077187. The reversal of 82077111 is 11177028.

It is not a de Polignac number, because 82077111 - 2³ = 82077103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82077911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7396 + ... + 14793.

It is an arithmetic number, because the mean of its divisors is an integer number (7655550).

Almost surely, 2^82077111 is an apocalyptic number.

82077111 is a deficient number, since it is larger than the sum of its proper divisors (40411689).

82077111 is a wasteful number, since it uses less digits than its factorization.

82077111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22335 (or 22329 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 82077111 is about 9059.6418803394. The cubic root of 82077111 is about 434.5842877458.

The spelling of 82077111 in words is "eighty-two million, seventy-seven thousand, one hundred eleven".