71316560 has 160 divisors (see below), whose sum is σ = 203558400. Its totient is φ = 23181312.

The previous prime is 71316559. The next prime is 71316563. The reversal of 71316560 is 6561317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71316563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 631064 + ... + 631176.

It is an arithmetic number, because the mean of its divisors is an integer number (1272240).

Almost surely, 2^71316560 is an apocalyptic number.

71316560 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71316560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101779200).

71316560 is an abundant number, since it is smaller than the sum of its proper divisors (132241840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71316560 is a wasteful number, since it uses less digits than its factorization.

71316560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 71316560 is about 8444.9132618399. The cubic root of 71316560 is about 414.6962697522.

Adding to 71316560 its reverse (6561317), we get a palindrome (77877877).

The spelling of 71316560 in words is "seventy-one million, three hundred sixteen thousand, five hundred sixty".