71604713 has 2 divisors, whose sum is σ = 71604714. Its totient is φ = 71604712.

The previous prime is 71604703. The next prime is 71604719. The reversal of 71604713 is 31740617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61669609 + 9935104 = 7853^2 + 3152^2 .

It is an emirp because it is prime and its reverse (31740617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71604713 - 2⁸ = 71604457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_4206917 and since 71604713 and 4206917 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (71604719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35802356 + 35802357.

It is an arithmetic number, because the mean of its divisors is an integer number (35802357).

Almost surely, 2^71604713 is an apocalyptic number.

It is an amenable number.

71604713 is a deficient number, since it is larger than the sum of its proper divisors (1).

71604713 is an equidigital number, since it uses as much as digits as its factorization.

71604713 is an evil number, because the sum of its binary digits is even.

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

The square root of 71604713 is about 8461.9568067912. The cubic root of 71604713 is about 415.2540429361.

The spelling of 71604713 in words is "seventy-one million, six hundred four thousand, seven hundred thirteen".