987759 has 6 divisors (see below), whose sum is σ = 1426776. Its totient is φ = 658500.

The previous prime is 987739. The next prime is 987793. The reversal of 987759 is 957789.

It is not a de Polignac number, because 987759 - 2⁷ = 987631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54867 + ... + 54884.

It is an arithmetic number, because the mean of its divisors is an integer number (237796).

2⁹⁸⁷⁷⁵⁹ is an apocalyptic number.

987759 is a deficient number, since it is larger than the sum of its proper divisors (439017).

987759 is a wasteful number, since it uses less digits than its factorization.

987759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109757 (or 109754 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 987759 is about 993.8606542167. The cubic root of 987759 is about 99.5902903391.

The spelling of 987759 in words is "nine hundred eighty-seven thousand, seven hundred fifty-nine".