80584785 has 24 divisors (see below), whose sum is σ = 140083944. Its totient is φ = 42854400.

The previous prime is 80584753. The next prime is 80584789. The reversal of 80584785 is 58748508.

It can be written as a sum of positive squares in 4 ways, for example, as 11229201 + 69355584 = 3351^2 + 8328^2 .

It is not a de Polignac number, because 80584785 - 2⁵ = 80584753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 80584785.

It is not an unprimeable number, because it can be changed into a prime (80584789) 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 23 ways as a sum of consecutive naturals, for example, 14385 + ... + 19185.

It is an arithmetic number, because the mean of its divisors is an integer number (5836831).

Almost surely, 2^80584785 is an apocalyptic number.

It is an amenable number.

80584785 is a deficient number, since it is larger than the sum of its proper divisors (59499159).

80584785 is a wasteful number, since it uses less digits than its factorization.

80584785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5185 (or 5182 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 80584785 is about 8976.9028623462. The cubic root of 80584785 is about 431.9342910604.

The spelling of 80584785 in words is "eighty million, five hundred eighty-four thousand, seven hundred eighty-five".