71718656 has 36 divisors (see below), whose sum is σ = 143709552. Its totient is φ = 35721216.

The previous prime is 71718641. The next prime is 71718667. The reversal of 71718656 is 65681717.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110525 + ... + 111171.

It is an arithmetic number, because the mean of its divisors is an integer number (3991932).

Almost surely, 2^71718656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71718656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71854776).

71718656 is an abundant number, since it is smaller than the sum of its proper divisors (71990896).

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

71718656 is an equidigital number, since it uses as much as digits as its factorization.

71718656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096 (or 1082 counting only the distinct ones).

The product of its digits is 70560, while the sum is 41.

The square root of 71718656 is about 8468.6867931221. The cubic root of 71718656 is about 415.4741877392.

The spelling of 71718656 in words is "seventy-one million, seven hundred eighteen thousand, six hundred fifty-six".