716689 has 8 divisors (see below), whose sum is σ = 753920. Its totient is φ = 680400.

The previous prime is 716687. The next prime is 716693. The reversal of 716689 is 986617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 716689 - 2¹ = 716687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (716687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1702 + ... + 2080.

It is an arithmetic number, because the mean of its divisors is an integer number (94240).

2⁷¹⁶⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

716689 is a deficient number, since it is larger than the sum of its proper divisors (37231).

716689 is a wasteful number, since it uses less digits than its factorization.

716689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471.

The product of its digits is 18144, while the sum is 37.

The square root of 716689 is about 846.5748637894. The cubic root of 716689 is about 89.4904955420.

The spelling of 716689 in words is "seven hundred sixteen thousand, six hundred eighty-nine".