716987 has 2 divisors, whose sum is σ = 716988. Its totient is φ = 716986.

The previous prime is 716981. The next prime is 717001. The reversal of 716987 is 789617.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 716987 - 2⁸ = 716731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 716987.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 716987.

It is not a weakly prime, because it can be changed into another prime (716981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358493 + 358494.

It is an arithmetic number, because the mean of its divisors is an integer number (358494).

2⁷¹⁶⁹⁸⁷ is an apocalyptic number.

716987 is a deficient number, since it is larger than the sum of its proper divisors (1).

716987 is an equidigital number, since it uses as much as digits as its factorization.

716987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 38.

The square root of 716987 is about 846.7508488334. The cubic root of 716987 is about 89.5028972357.

The spelling of 716987 in words is "seven hundred sixteen thousand, nine hundred eighty-seven".