82966578 has 16 divisors (see below), whose sum is σ = 174666720. Its totient is φ = 26199936.

The previous prime is 82966577. The next prime is 82966591. The reversal of 82966578 is 87566928.

It is a self number, because there is not a number n which added to its sum of digits gives 82966578.

It is not an unprimeable number, because it can be changed into a prime (82966573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363775 + ... + 364002.

It is an arithmetic number, because the mean of its divisors is an integer number (10916670).

Almost surely, 2^82966578 is an apocalyptic number.

82966578 is an abundant number, since it is smaller than the sum of its proper divisors (91700142).

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

82966578 is a wasteful number, since it uses less digits than its factorization.

82966578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727801.

The product of its digits is 1451520, while the sum is 51.

The square root of 82966578 is about 9108.5991239048. The cubic root of 82966578 is about 436.1485094351.

The spelling of 82966578 in words is "eighty-two million, nine hundred sixty-six thousand, five hundred seventy-eight".