71067812 has 6 divisors (see below), whose sum is σ = 124368678. Its totient is φ = 35533904.

The previous prime is 71067797. The next prime is 71067817. The reversal of 71067812 is 21876017.

It can be written as a sum of positive squares in only one way, i.e., 55115776 + 15952036 = 7424^2 + 3994^2 .

It is not an unprimeable number, because it can be changed into a prime (71067817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8883473 + ... + 8883480.

It is an arithmetic number, because the mean of its divisors is an integer number (20728113).

Almost surely, 2^71067812 is an apocalyptic number.

It is an amenable number.

71067812 is a deficient number, since it is larger than the sum of its proper divisors (53300866).

71067812 is a wasteful number, since it uses less digits than its factorization.

71067812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17766957 (or 17766955 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 71067812 is about 8430.1727147194. The cubic root of 71067812 is about 414.2135626345.

The spelling of 71067812 in words is "seventy-one million, sixty-seven thousand, eight hundred twelve".