71286473 has 2 divisors, whose sum is σ = 71286474. Its totient is φ = 71286472.

The previous prime is 71286427. The next prime is 71286493. The reversal of 71286473 is 37468217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59644729 + 11641744 = 7723^2 + 3412^2 .

It is an emirp because it is prime and its reverse (37468217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71286473 - 2¹⁶ = 71220937 is a prime.

It is a super-2 number, since 2×71286473² = 10163522465559458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71286493) 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, 35643236 + 35643237.

It is an arithmetic number, because the mean of its divisors is an integer number (35643237).

Almost surely, 2^71286473 is an apocalyptic number.

It is an amenable number.

71286473 is a deficient number, since it is larger than the sum of its proper divisors (1).

71286473 is an equidigital number, since it uses as much as digits as its factorization.

71286473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 38.

The square root of 71286473 is about 8443.1317057120. The cubic root of 71286473 is about 414.6379442540.

The spelling of 71286473 in words is "seventy-one million, two hundred eighty-six thousand, four hundred seventy-three".