71659061 has 2 divisors, whose sum is σ = 71659062. Its totient is φ = 71659060.

The previous prime is 71659009. The next prime is 71659109. The reversal of 71659061 is 16095617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59367025 + 12292036 = 7705^2 + 3506^2 .

It is a cyclic number.

It is not a de Polignac number, because 71659061 - 2²² = 67464757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71659961) 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 as a sum of consecutive naturals, namely, 35829530 + 35829531.

It is an arithmetic number, because the mean of its divisors is an integer number (35829531).

Almost surely, 2^71659061 is an apocalyptic number.

It is an amenable number.

71659061 is a deficient number, since it is larger than the sum of its proper divisors (1).

71659061 is an equidigital number, since it uses as much as digits as its factorization.

71659061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 71659061 is about 8465.1675116326. The cubic root of 71659061 is about 415.3590756843.

The spelling of 71659061 in words is "seventy-one million, six hundred fifty-nine thousand, sixty-one".