80575709 has 2 divisors, whose sum is σ = 80575710. Its totient is φ = 80575708.

The previous prime is 80575687. The next prime is 80575753. The reversal of 80575709 is 90757508.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70476025 + 10099684 = 8395^2 + 3178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80575709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80575799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40287854 + 40287855.

It is an arithmetic number, because the mean of its divisors is an integer number (40287855).

Almost surely, 2^80575709 is an apocalyptic number.

It is an amenable number.

80575709 is a deficient number, since it is larger than the sum of its proper divisors (1).

80575709 is an equidigital number, since it uses as much as digits as its factorization.

80575709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 41.

The square root of 80575709 is about 8976.3973285500. The cubic root of 80575709 is about 431.9180746708.

The spelling of 80575709 in words is "eighty million, five hundred seventy-five thousand, seven hundred nine".