71704273 has 2 divisors, whose sum is σ = 71704274. Its totient is φ = 71704272.

The previous prime is 71704247. The next prime is 71704279. The reversal of 71704273 is 37240717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36385024 + 35319249 = 6032^2 + 5943^2 .

It is an emirp because it is prime and its reverse (37240717) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71704273 - 2⁹ = 71703761 is a prime.

It is not a weakly prime, because it can be changed into another prime (71704279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35852136 + 35852137.

It is an arithmetic number, because the mean of its divisors is an integer number (35852137).

Almost surely, 2^71704273 is an apocalyptic number.

It is an amenable number.

71704273 is a deficient number, since it is larger than the sum of its proper divisors (1).

71704273 is an equidigital number, since it uses as much as digits as its factorization.

71704273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 71704273 is about 8467.8375633924. The cubic root of 71704273 is about 415.4464117736.

The spelling of 71704273 in words is "seventy-one million, seven hundred four thousand, two hundred seventy-three".