71612417 has 2 divisors, whose sum is σ = 71612418. Its totient is φ = 71612416.

The previous prime is 71612413. The next prime is 71612419. The reversal of 71612417 is 71421617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64899136 + 6713281 = 8056^2 + 2591^2 .

It is a cyclic number.

It is not a de Polignac number, because 71612417 - 2² = 71612413 is a prime.

Together with 71612419, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71612417.

It is not a weakly prime, because it can be changed into another prime (71612413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35806208 + 35806209.

It is an arithmetic number, because the mean of its divisors is an integer number (35806209).

Almost surely, 2^71612417 is an apocalyptic number.

It is an amenable number.

71612417 is a deficient number, since it is larger than the sum of its proper divisors (1).

71612417 is an equidigital number, since it uses as much as digits as its factorization.

71612417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352, while the sum is 29.

The square root of 71612417 is about 8462.4120084052. The cubic root of 71612417 is about 415.2689348908.

The spelling of 71612417 in words is "seventy-one million, six hundred twelve thousand, four hundred seventeen".