80085745 has 16 divisors (see below), whose sum is σ = 97870032. Its totient is φ = 62899200.

The previous prime is 80085743. The next prime is 80085757. The reversal of 80085745 is 54758008.

It can be written as a sum of positive squares in 8 ways, for example, as 2768896 + 77316849 = 1664^2 + 8793^2 .

It is not a de Polignac number, because 80085745 - 2¹ = 80085743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80085743) by changing a digit.

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, 113895 + ... + 114595.

It is an arithmetic number, because the mean of its divisors is an integer number (6116877).

Almost surely, 2^80085745 is an apocalyptic number.

It is an amenable number.

80085745 is a deficient number, since it is larger than the sum of its proper divisors (17784287).

80085745 is a wasteful number, since it uses less digits than its factorization.

80085745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092.

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 80085745 is about 8949.0639175279. The cubic root of 80085745 is about 431.0408263751.

The spelling of 80085745 in words is "eighty million, eighty-five thousand, seven hundred forty-five".