80845680 has 40 divisors (see below), whose sum is σ = 250622352. Its totient is φ = 21558784.

The previous prime is 80845673. The next prime is 80845691. The reversal of 80845680 is 8654808.

It is a tau number, because it is divible by the number of its divisors (40).

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, 168189 + ... + 168668.

Almost surely, 2^80845680 is an apocalyptic number.

80845680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80845680 is an abundant number, since it is smaller than the sum of its proper divisors (169776672).

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

80845680 is a wasteful number, since it uses less digits than its factorization.

80845680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336873 (or 336867 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 80845680 is about 8991.4225793253. The cubic root of 80845680 is about 432.3999211566.

The spelling of 80845680 in words is "eighty million, eight hundred forty-five thousand, six hundred eighty".