82681667 has 4 divisors (see below), whose sum is σ = 82795200. Its totient is φ = 82568136.

The previous prime is 82681663. The next prime is 82681679. The reversal of 82681667 is 76618628.

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 82681667 - 2² = 82681663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82681663) 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, 55667 + ... + 57132.

It is an arithmetic number, because the mean of its divisors is an integer number (20698800).

Almost surely, 2^82681667 is an apocalyptic number.

82681667 is a deficient number, since it is larger than the sum of its proper divisors (113533).

82681667 is a wasteful number, since it uses less digits than its factorization.

82681667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113532.

The product of its digits is 193536, while the sum is 44.

The square root of 82681667 is about 9092.9460022591. The cubic root of 82681667 is about 435.6486855898.

The spelling of 82681667 in words is "eighty-two million, six hundred eighty-one thousand, six hundred sixty-seven".