988635 has 16 divisors (see below), whose sum is σ = 1675296. Its totient is φ = 496128.

The previous prime is 988607. The next prime is 988643. The reversal of 988635 is 536889.

It is not a de Polignac number, because 988635 - 2⁶ = 988571 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 988593 and 988602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1684 + ... + 2193.

It is an arithmetic number, because the mean of its divisors is an integer number (104706).

2⁹⁸⁸⁶³⁵ is an apocalyptic number.

988635 is a deficient number, since it is larger than the sum of its proper divisors (686661).

988635 is a wasteful number, since it uses less digits than its factorization.

988635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3902.

The product of its digits is 51840, while the sum is 39.

The square root of 988635 is about 994.3012621937. The cubic root of 988635 is about 99.6197223891.

The spelling of 988635 in words is "nine hundred eighty-eight thousand, six hundred thirty-five".