71267213 has 4 divisors (see below), whose sum is σ = 75459420. Its totient is φ = 67075008.

The previous prime is 71267137. The next prime is 71267227. The reversal of 71267213 is 31276217.

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 61669609 + 9597604 = 7853^2 + 3098^2 .

It is a cyclic number.

It is not a de Polignac number, because 71267213 - 2¹⁰ = 71266189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71260213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2096078 + ... + 2096111.

It is an arithmetic number, because the mean of its divisors is an integer number (18864855).

Almost surely, 2^71267213 is an apocalyptic number.

It is an amenable number.

71267213 is a deficient number, since it is larger than the sum of its proper divisors (4192207).

71267213 is a wasteful number, since it uses less digits than its factorization.

71267213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192206.

The product of its digits is 3528, while the sum is 29.

The square root of 71267213 is about 8441.9910566169. The cubic root of 71267213 is about 414.6005989448.

The spelling of 71267213 in words is "seventy-one million, two hundred sixty-seven thousand, two hundred thirteen".