711680 has 44 divisors (see below), whose sum is σ = 1719480. Its totient is φ = 282624.

The previous prime is 711679. The next prime is 711691. The reversal of 711680 is 86117.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5051 + ... + 5189.

2⁷¹¹⁶⁸⁰ 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 711680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (859740).

711680 is an abundant number, since it is smaller than the sum of its proper divisors (1007800).

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

711680 is a wasteful number, since it uses less digits than its factorization.

711680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 711680 is about 843.6112848937. The cubic root of 711680 is about 89.2815223937.

Adding to 711680 its reverse (86117), we get a palindrome (797797).

The spelling of 711680 in words is "seven hundred eleven thousand, six hundred eighty".