71560871 has 4 divisors (see below), whose sum is σ = 75770352. Its totient is φ = 67351392.

The previous prime is 71560847. The next prime is 71560873. The reversal of 71560871 is 17806517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17806517 = 463 ⋅38459.

It is a cyclic number.

It is not a de Polignac number, because 71560871 - 2¹⁰ = 71559847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71560873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2104715 + ... + 2104748.

It is an arithmetic number, because the mean of its divisors is an integer number (18942588).

Almost surely, 2^71560871 is an apocalyptic number.

71560871 is a deficient number, since it is larger than the sum of its proper divisors (4209481).

71560871 is a wasteful number, since it uses less digits than its factorization.

71560871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4209480.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 71560871 is about 8459.3658745795. The cubic root of 71560871 is about 415.1692753099.

The spelling of 71560871 in words is "seventy-one million, five hundred sixty thousand, eight hundred seventy-one".