71612213 has 8 divisors (see below), whose sum is σ = 73022208. Its totient is φ = 70212384.

The previous prime is 71612171. The next prime is 71612249. The reversal of 71612213 is 31221617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71612213 - 2¹⁴ = 71595829 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 (71612293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12545 + ... + 17337.

It is an arithmetic number, because the mean of its divisors is an integer number (9127776).

Almost surely, 2^71612213 is an apocalyptic number.

It is an amenable number.

71612213 is a deficient number, since it is larger than the sum of its proper divisors (1409995).

71612213 is a wasteful number, since it uses less digits than its factorization.

71612213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5083.

The product of its digits is 504, while the sum is 23.

The square root of 71612213 is about 8462.3999550955. The cubic root of 71612213 is about 415.2685405693.

The spelling of 71612213 in words is "seventy-one million, six hundred twelve thousand, two hundred thirteen".