987505 has 16 divisors (see below), whose sum is σ = 1281024. Its totient is φ = 728640.

The previous prime is 987491. The next prime is 987509. The reversal of 987505 is 505789.

987505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 987505 - 2⁵ = 987473 is a prime.

It is a super-2 number, since 2×987505² = 1950332250050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3427 + ... + 3703.

It is an arithmetic number, because the mean of its divisors is an integer number (80064).

2⁹⁸⁷⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

987505 is a deficient number, since it is larger than the sum of its proper divisors (293519).

987505 is a wasteful number, since it uses less digits than its factorization.

987505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 987505 is about 993.7328614874. The cubic root of 987505 is about 99.5817531344.

The spelling of 987505 in words is "nine hundred eighty-seven thousand, five hundred five".