82678660 has 12 divisors (see below), whose sum is σ = 173625228. Its totient is φ = 33071456.

The previous prime is 82678639. The next prime is 82678663. The reversal of 82678660 is 6687628.

It can be written as a sum of positive squares in 2 ways, for example, as 52186176 + 30492484 = 7224^2 + 5522^2 .

It is not an unprimeable number, because it can be changed into a prime (82678663) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2066947 + ... + 2066986.

It is an arithmetic number, because the mean of its divisors is an integer number (14468769).

Almost surely, 2^82678660 is an apocalyptic number.

It is an amenable number.

82678660 is an abundant number, since it is smaller than the sum of its proper divisors (90946568).

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

82678660 is a wasteful number, since it uses less digits than its factorization.

82678660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133942 (or 4133940 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 82678660 is about 9092.7806528036. The cubic root of 82678660 is about 435.6434042438.

It can be divided in two parts, 82678 and 660, that added together give a palindrome (83338).

The spelling of 82678660 in words is "eighty-two million, six hundred seventy-eight thousand, six hundred sixty".