80085640 has 32 divisors (see below), whose sum is σ = 190793880. Its totient is φ = 30149632.

The previous prime is 80085637. The next prime is 80085713. The reversal of 80085640 is 4658008.

It can be written as a sum of positive squares in 4 ways, for example, as 66879684 + 13205956 = 8178^2 + 3634^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58207 + ... + 59566.

Almost surely, 2^80085640 is an apocalyptic number.

It is an amenable number.

80085640 is an abundant number, since it is smaller than the sum of its proper divisors (110708240).

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

80085640 is a wasteful number, since it uses less digits than its factorization.

80085640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117801 (or 117797 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 80085640 is about 8949.0580509906. The cubic root of 80085640 is about 431.0406379965.

The spelling of 80085640 in words is "eighty million, eighty-five thousand, six hundred forty".