71612113 has 2 divisors, whose sum is σ = 71612114. Its totient is φ = 71612112.

The previous prime is 71612081. The next prime is 71612119. The reversal of 71612113 is 31121617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37307664 + 34304449 = 6108^2 + 5857^2 .

It is an emirp because it is prime and its reverse (31121617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71612113 - 2⁵ = 71612081 is a prime.

It is not a weakly prime, because it can be changed into another prime (71612119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35806056 + 35806057.

It is an arithmetic number, because the mean of its divisors is an integer number (35806057).

Almost surely, 2^71612113 is an apocalyptic number.

It is an amenable number.

71612113 is a deficient number, since it is larger than the sum of its proper divisors (1).

71612113 is an equidigital number, since it uses as much as digits as its factorization.

71612113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 22.

The square root of 71612113 is about 8462.3940466041. The cubic root of 71612113 is about 415.2683472742.

The spelling of 71612113 in words is "seventy-one million, six hundred twelve thousand, one hundred thirteen".