71632716 has 12 divisors (see below), whose sum is σ = 167143032. Its totient is φ = 23877568.

The previous prime is 71632709. The next prime is 71632721. The reversal of 71632716 is 61723617.

It is a tau number, because it is divible by the number of its divisors (12).

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, 2984685 + ... + 2984708.

It is an arithmetic number, because the mean of its divisors is an integer number (13928586).

Almost surely, 2^71632716 is an apocalyptic number.

It is an amenable number.

71632716 is an abundant number, since it is smaller than the sum of its proper divisors (95510316).

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

71632716 is a wasteful number, since it uses less digits than its factorization.

71632716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5969400 (or 5969398 counting only the distinct ones).

The product of its digits is 10584, while the sum is 33.

The square root of 71632716 is about 8463.6112859701. The cubic root of 71632716 is about 415.3081680672.

Subtracting from 71632716 its reverse (61723617), we obtain a palindrome (9909099).

The spelling of 71632716 in words is "seventy-one million, six hundred thirty-two thousand, seven hundred sixteen".