71134643 has 2 divisors, whose sum is σ = 71134644. Its totient is φ = 71134642.

The previous prime is 71134633. The next prime is 71134669. The reversal of 71134643 is 34643117.

It is a weak prime.

It is an emirp because it is prime and its reverse (34643117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71134643 - 2⁴ = 71134627 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71134633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35567321 + 35567322.

It is an arithmetic number, because the mean of its divisors is an integer number (35567322).

Almost surely, 2^71134643 is an apocalyptic number.

71134643 is a deficient number, since it is larger than the sum of its proper divisors (1).

71134643 is an equidigital number, since it uses as much as digits as its factorization.

71134643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 29.

The square root of 71134643 is about 8434.1355810776. The cubic root of 71134643 is about 414.3433618268.

The spelling of 71134643 in words is "seventy-one million, one hundred thirty-four thousand, six hundred forty-three".