716989 has 8 divisors (see below), whose sum is σ = 882560. Its totient is φ = 567216.

The previous prime is 716987. The next prime is 717001. The reversal of 716989 is 989617.

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

It is not a de Polignac number, because 716989 - 2¹ = 716987 is a prime.

It is a super-2 number, since 2×716989² = 1028146452242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (716981) 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, 3849 + ... + 4030.

It is an arithmetic number, because the mean of its divisors is an integer number (110320).

2⁷¹⁶⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

716989 is a deficient number, since it is larger than the sum of its proper divisors (165571).

716989 is a wasteful number, since it uses less digits than its factorization.

716989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7899.

The product of its digits is 27216, while the sum is 40.

The square root of 716989 is about 846.7520298175. The cubic root of 716989 is about 89.5029804569.

The spelling of 716989 in words is "seven hundred sixteen thousand, nine hundred eighty-nine".