82208660 has 12 divisors (see below), whose sum is σ = 172638228. Its totient is φ = 32883456.

The previous prime is 82208629. The next prime is 82208669. The reversal of 82208660 is 6680228.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52243984 + 29964676 = 7228^2 + 5474^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82208669) 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, 2055197 + ... + 2055236.

It is an arithmetic number, because the mean of its divisors is an integer number (14386519).

Almost surely, 2^82208660 is an apocalyptic number.

It is an amenable number.

82208660 is an abundant number, since it is smaller than the sum of its proper divisors (90429568).

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

82208660 is a wasteful number, since it uses less digits than its factorization.

82208660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4110442 (or 4110440 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 82208660 is about 9066.8991391765. The cubic root of 82208660 is about 434.8163403134.

Adding to 82208660 its reverse (6680228), we get a palindrome (88888888).

The spelling of 82208660 in words is "eighty-two million, two hundred eight thousand, six hundred sixty".