80221785 has 16 divisors (see below), whose sum is σ = 146691456. Its totient is φ = 36672768.

The previous prime is 80221763. The next prime is 80221811. The reversal of 80221785 is 58712208.

It is not a de Polignac number, because 80221785 - 2⁵ = 80221753 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381904 + ... + 382113.

It is an arithmetic number, because the mean of its divisors is an integer number (9168216).

Almost surely, 2^80221785 is an apocalyptic number.

It is an amenable number.

80221785 is a deficient number, since it is larger than the sum of its proper divisors (66469671).

80221785 is a wasteful number, since it uses less digits than its factorization.

80221785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764032.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 80221785 is about 8956.6614874070. The cubic root of 80221785 is about 431.2847550230.

The spelling of 80221785 in words is "eighty million, two hundred twenty-one thousand, seven hundred eighty-five".