71713616 has 60 divisors (see below), whose sum is σ = 159086172. Its totient is φ = 31125504.

The previous prime is 71713601. The next prime is 71713627. The reversal of 71713616 is 61631717.

It can be written as a sum of positive squares in 6 ways, for example, as 817216 + 70896400 = 904^2 + 8420^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59516 + ... + 60708.

Almost surely, 2^71713616 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 71713616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79543086).

71713616 is an abundant number, since it is smaller than the sum of its proper divisors (87372556).

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

71713616 is a wasteful number, since it uses less digits than its factorization.

71713616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248 (or 1225 counting only the distinct ones).

The product of its digits is 5292, while the sum is 32.

The square root of 71713616 is about 8468.3892210975. The cubic root of 71713616 is about 415.4644550835.

The spelling of 71713616 in words is "seventy-one million, seven hundred thirteen thousand, six hundred sixteen".