797987 has 2 divisors, whose sum is σ = 797988. Its totient is φ = 797986.

The previous prime is 797977. The next prime is 798023. The reversal of 797987 is 789797.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-797987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (797917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398993 + 398994.

It is an arithmetic number, because the mean of its divisors is an integer number (398994).

2⁷⁹⁷⁹⁸⁷ is an apocalyptic number.

797987 is a deficient number, since it is larger than the sum of its proper divisors (1).

797987 is an equidigital number, since it uses as much as digits as its factorization.

797987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 222264, while the sum is 47.

The square root of 797987 is about 893.3011810134. The cubic root of 797987 is about 92.7538486208.

The spelling of 797987 in words is "seven hundred ninety-seven thousand, nine hundred eighty-seven".