80666682 has 16 divisors (see below), whose sum is σ = 162059520. Its totient is φ = 26767872.

The previous prime is 80666671. The next prime is 80666687. The reversal of 80666682 is 28666608.

It is a super-2 number, since 2×80666682² = 13014227169778248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80666687) 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 7 ways as a sum of consecutive naturals, for example, 28807 + ... + 31482.

It is an arithmetic number, because the mean of its divisors is an integer number (10128720).

Almost surely, 2^80666682 is an apocalyptic number.

80666682 is an abundant number, since it is smaller than the sum of its proper divisors (81392838).

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

80666682 is a wasteful number, since it uses less digits than its factorization.

80666682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60517.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 80666682 is about 8981.4632438150. The cubic root of 80666682 is about 432.0805641070.

The spelling of 80666682 in words is "eighty million, six hundred sixty-six thousand, six hundred eighty-two".