988505 has 16 divisors (see below), whose sum is σ = 1380864. Its totient is φ = 665280.

The previous prime is 988501. The next prime is 988511. The reversal of 988505 is 505889.

It is not a de Polignac number, because 988505 - 2² = 988501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988501) 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 15 ways as a sum of consecutive naturals, for example, 1904 + ... + 2366.

It is an arithmetic number, because the mean of its divisors is an integer number (86304).

2⁹⁸⁸⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

988505 is a deficient number, since it is larger than the sum of its proper divisors (392359).

988505 is a wasteful number, since it uses less digits than its factorization.

988505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 988505 is about 994.2358875036. The cubic root of 988505 is about 99.6153557181.

The spelling of 988505 in words is "nine hundred eighty-eight thousand, five hundred five".