80564593 has 4 divisors (see below), whose sum is σ = 81277668. Its totient is φ = 79851520.

The previous prime is 80564587. The next prime is 80564597. The reversal of 80564593 is 39546508.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43256929 + 37307664 = 6577^2 + 6108^2 .

It is a cyclic number.

It is not a de Polignac number, because 80564593 - 2¹³ = 80556401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80564597) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 356368 + ... + 356593.

It is an arithmetic number, because the mean of its divisors is an integer number (20319417).

Almost surely, 2^80564593 is an apocalyptic number.

It is an amenable number.

80564593 is a deficient number, since it is larger than the sum of its proper divisors (713075).

80564593 is a wasteful number, since it uses less digits than its factorization.

80564593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713074.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 80564593 is about 8975.7781278282. The cubic root of 80564593 is about 431.8982116866.

The spelling of 80564593 in words is "eighty million, five hundred sixty-four thousand, five hundred ninety-three".