82766543 has 4 divisors (see below), whose sum is σ = 82789128. Its totient is φ = 82743960.

The previous prime is 82766539. The next prime is 82766587. The reversal of 82766543 is 34566728.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82766543 - 2² = 82766539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82766543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82766513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4388 + ... + 13593.

It is an arithmetic number, because the mean of its divisors is an integer number (20697282).

Almost surely, 2^82766543 is an apocalyptic number.

82766543 is a deficient number, since it is larger than the sum of its proper divisors (22585).

82766543 is a wasteful number, since it uses less digits than its factorization.

82766543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22584.

The product of its digits is 241920, while the sum is 41.

The square root of 82766543 is about 9097.6119394048. The cubic root of 82766543 is about 435.7977048098.

The spelling of 82766543 in words is "eighty-two million, seven hundred sixty-six thousand, five hundred forty-three".