987598 has 16 divisors (see below), whose sum is σ = 1620864. Its totient is φ = 449280.

The previous prime is 987593. The next prime is 987599. The reversal of 987598 is 895789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987593) 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 7 ways as a sum of consecutive naturals, for example, 586 + ... + 1522.

It is an arithmetic number, because the mean of its divisors is an integer number (101304).

2⁹⁸⁷⁵⁹⁸ is an apocalyptic number.

987598 is a deficient number, since it is larger than the sum of its proper divisors (633266).

987598 is a wasteful number, since it uses less digits than its factorization.

987598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987.

The product of its digits is 181440, while the sum is 46.

The square root of 987598 is about 993.7796536456. The cubic root of 987598 is about 99.5848791312.

Subtracting from 987598 its reverse (895789), we obtain a square (91809 = 303²).

The spelling of 987598 in words is "nine hundred eighty-seven thousand, five hundred ninety-eight".