80221686 has 16 divisors (see below), whose sum is σ = 168888000. Its totient is φ = 25333128.

The previous prime is 80221679. The next prime is 80221699. The reversal of 80221686 is 68612208.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 351736 + ... + 351963.

It is an arithmetic number, because the mean of its divisors is an integer number (10555500).

Almost surely, 2^80221686 is an apocalyptic number.

80221686 is an abundant number, since it is smaller than the sum of its proper divisors (88666314).

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

80221686 is a wasteful number, since it uses less digits than its factorization.

80221686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703723.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 80221686 is about 8956.6559607925. The cubic root of 80221686 is about 431.2845776098.

The spelling of 80221686 in words is "eighty million, two hundred twenty-one thousand, six hundred eighty-six".