80724073 has 2 divisors, whose sum is σ = 80724074. Its totient is φ = 80724072.

The previous prime is 80724037. The next prime is 80724097. The reversal of 80724073 is 37042708.

Together with previous prime (80724037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57942544 + 22781529 = 7612^2 + 4773^2 .

It is a cyclic number.

It is not a de Polignac number, because 80724073 - 2⁹ = 80723561 is a prime.

It is not a weakly prime, because it can be changed into another prime (80704073) 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 as a sum of consecutive naturals, namely, 40362036 + 40362037.

It is an arithmetic number, because the mean of its divisors is an integer number (40362037).

Almost surely, 2^80724073 is an apocalyptic number.

It is an amenable number.

80724073 is a deficient number, since it is larger than the sum of its proper divisors (1).

80724073 is an equidigital number, since it uses as much as digits as its factorization.

80724073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 80724073 is about 8984.6576451193. The cubic root of 80724073 is about 432.1830089518.

The spelling of 80724073 in words is "eighty million, seven hundred twenty-four thousand, seventy-three".