71206345 has 16 divisors (see below), whose sum is σ = 97822080. Its totient is φ = 48743424.

The previous prime is 71206283. The next prime is 71206361. The reversal of 71206345 is 54360217.

It is a cyclic number.

It is not a de Polignac number, because 71206345 - 2⁹ = 71205833 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 24489 + ... + 27241.

It is an arithmetic number, because the mean of its divisors is an integer number (6113880).

Almost surely, 2^71206345 is an apocalyptic number.

It is an amenable number.

71206345 is a deficient number, since it is larger than the sum of its proper divisors (26615735).

71206345 is a wasteful number, since it uses less digits than its factorization.

71206345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 71206345 is about 8438.3852128236. The cubic root of 71206345 is about 414.4825311073.

The spelling of 71206345 in words is "seventy-one million, two hundred six thousand, three hundred forty-five".