82678566 has 8 divisors (see below), whose sum is σ = 165357144. Its totient is φ = 27559520.

The previous prime is 82678549. The next prime is 82678567. The reversal of 82678566 is 66587628.

It is a sphenic number, since it is the product of 3 distinct primes.

82678566 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82678567) 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, 6889875 + ... + 6889886.

It is an arithmetic number, because the mean of its divisors is an integer number (20669643).

Almost surely, 2^82678566 is an apocalyptic number.

82678566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82678566 is a wasteful number, since it uses less digits than its factorization.

82678566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13779766.

The product of its digits is 967680, while the sum is 48.

The square root of 82678566 is about 9092.7754838663. The cubic root of 82678566 is about 435.6432391448.

The spelling of 82678566 in words is "eighty-two million, six hundred seventy-eight thousand, five hundred sixty-six".