987697 has 2 divisors, whose sum is σ = 987698. Its totient is φ = 987696.

The previous prime is 987659. The next prime is 987713. The reversal of 987697 is 796789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 519841 + 467856 = 721^2 + 684^2 .

It is a cyclic number.

It is not a de Polignac number, because 987697 - 2¹⁵ = 954929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (987607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493848 + 493849.

It is an arithmetic number, because the mean of its divisors is an integer number (493849).

2⁹⁸⁷⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

987697 is a deficient number, since it is larger than the sum of its proper divisors (1).

987697 is an equidigital number, since it uses as much as digits as its factorization.

987697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 46.

The square root of 987697 is about 993.8294622318. The cubic root of 987697 is about 99.5882065895.

The spelling of 987697 in words is "nine hundred eighty-seven thousand, six hundred ninety-seven".