71722716 has 48 divisors (see below), whose sum is σ = 186052608. Its totient is φ = 21355200.

The previous prime is 71722691. The next prime is 71722723. The reversal of 71722716 is 61722717.

It is a happy number.

It is a congruent number.

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, 2580 + ... + 12251.

It is an arithmetic number, because the mean of its divisors is an integer number (3876096).

Almost surely, 2^71722716 is an apocalyptic number.

It is an amenable number.

71722716 is an abundant number, since it is smaller than the sum of its proper divisors (114329892).

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

71722716 is a wasteful number, since it uses less digits than its factorization.

71722716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14882 (or 14880 counting only the distinct ones).

The product of its digits is 8232, while the sum is 33.

The square root of 71722716 is about 8468.9264963158. The cubic root of 71722716 is about 415.4820276024.

Subtracting from 71722716 its reverse (61722717), we obtain a palindrome (9999999).

The spelling of 71722716 in words is "seventy-one million, seven hundred twenty-two thousand, seven hundred sixteen".