716985 has 32 divisors (see below), whose sum is σ = 1313280. Its totient is φ = 370944.

The previous prime is 716981. The next prime is 716987. The reversal of 716985 is 589617.

It is not a de Polignac number, because 716985 - 2² = 716981 is a prime.

Its product of digits (15120) is a multiple of the sum of its prime divisors (168).

716985 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 716985.

It is not an unprimeable number, because it can be changed into a prime (716981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6289 + ... + 6401.

It is an arithmetic number, because the mean of its divisors is an integer number (41040).

2⁷¹⁶⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

716985 is a deficient number, since it is larger than the sum of its proper divisors (596295).

716985 is a wasteful number, since it uses less digits than its factorization.

716985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 168 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 716985 is about 846.7496678476. The cubic root of 716985 is about 89.5028140143.

It can be divided in two parts, 71 and 6985, that added together give a square (7056 = 84²).

The spelling of 716985 in words is "seven hundred sixteen thousand, nine hundred eighty-five".