82678658 has 4 divisors (see below), whose sum is σ = 124017990. Its totient is φ = 41339328.

The previous prime is 82678639. The next prime is 82678663. The reversal of 82678658 is 85687628.

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

It can be written as a sum of positive squares in only one way, i.e., 75986089 + 6692569 = 8717^2 + 2587^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20669663 + ... + 20669666.

Almost surely, 2^82678658 is an apocalyptic number.

82678658 is a deficient number, since it is larger than the sum of its proper divisors (41339332).

82678658 is a wasteful number, since it uses less digits than its factorization.

82678658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41339331.

The product of its digits is 1290240, while the sum is 50.

The square root of 82678658 is about 9092.7805428263. The cubic root of 82678658 is about 435.6434007310.

The spelling of 82678658 in words is "eighty-two million, six hundred seventy-eight thousand, six hundred fifty-eight".