71676589 has 2 divisors, whose sum is σ = 71676590. Its totient is φ = 71676588.

The previous prime is 71676587. The next prime is 71676613. The reversal of 71676589 is 98567617.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67404100 + 4272489 = 8210^2 + 2067^2 .

It is a cyclic number.

It is not a de Polignac number, because 71676589 - 2¹ = 71676587 is a prime.

Together with 71676587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71676581) 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, 35838294 + 35838295.

It is an arithmetic number, because the mean of its divisors is an integer number (35838295).

Almost surely, 2^71676589 is an apocalyptic number.

It is an amenable number.

71676589 is a deficient number, since it is larger than the sum of its proper divisors (1).

71676589 is an equidigital number, since it uses as much as digits as its factorization.

71676589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 49.

The square root of 71676589 is about 8466.2027497574. The cubic root of 71676589 is about 415.3929389076.

The spelling of 71676589 in words is "seventy-one million, six hundred seventy-six thousand, five hundred eighty-nine".