71064943 has 2 divisors, whose sum is σ = 71064944. Its totient is φ = 71064942.

The previous prime is 71064911. The next prime is 71064949. The reversal of 71064943 is 34946017.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (34946017) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71064943 - 2⁵ = 71064911 is a prime.

It is a super-2 number, since 2×71064943² = 10100452247186498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71064899 and 71064908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71064949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35532471 + 35532472.

It is an arithmetic number, because the mean of its divisors is an integer number (35532472).

Almost surely, 2^71064943 is an apocalyptic number.

71064943 is a deficient number, since it is larger than the sum of its proper divisors (1).

71064943 is an equidigital number, since it uses as much as digits as its factorization.

71064943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 71064943 is about 8430.0025504148. The cubic root of 71064943 is about 414.2079886403.

The spelling of 71064943 in words is "seventy-one million, sixty-four thousand, nine hundred forty-three".