716681 has 8 divisors (see below), whose sum is σ = 838464. Its totient is φ = 599760.

The previous prime is 716671. The next prime is 716687. The reversal of 716681 is 186617.

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

It is not a de Polignac number, because 716681 - 2¹⁰ = 715657 is a prime.

It is a super-2 number, since 2×716681² = 1027263311522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 716681.

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, 890 + ... + 1491.

It is an arithmetic number, because the mean of its divisors is an integer number (104808).

2⁷¹⁶⁶⁸¹ is an apocalyptic number.

It is an amenable number.

716681 is a deficient number, since it is larger than the sum of its proper divisors (121783).

716681 is a wasteful number, since it uses less digits than its factorization.

716681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431.

The product of its digits is 2016, while the sum is 29.

The square root of 716681 is about 846.5701388544. The cubic root of 716681 is about 89.4901625633.

The spelling of 716681 in words is "seven hundred sixteen thousand, six hundred eighty-one".