71298713 has 4 divisors (see below), whose sum is σ = 73037748. Its totient is φ = 69559680.

The previous prime is 71298679. The next prime is 71298749. The reversal of 71298713 is 31789217.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9078169 + 62220544 = 3013^2 + 7888^2 .

It is a cyclic number.

It is not a de Polignac number, because 71298713 - 2⁶ = 71298649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71298113) 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 in 3 ways as a sum of consecutive naturals, for example, 869456 + ... + 869537.

It is an arithmetic number, because the mean of its divisors is an integer number (18259437).

Almost surely, 2^71298713 is an apocalyptic number.

It is an amenable number.

71298713 is a deficient number, since it is larger than the sum of its proper divisors (1739035).

71298713 is a wasteful number, since it uses less digits than its factorization.

71298713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739034.

The product of its digits is 21168, while the sum is 38.

The square root of 71298713 is about 8443.8565241245. The cubic root of 71298713 is about 414.6616742258.

The spelling of 71298713 in words is "seventy-one million, two hundred ninety-eight thousand, seven hundred thirteen".