988636 has 12 divisors (see below), whose sum is σ = 1887480. Its totient is φ = 449360.

The previous prime is 988607. The next prime is 988643. The reversal of 988636 is 636889.

It is a super-2 number, since 2×988636² = 1954802280992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

988636 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11191 + ... + 11278.

It is an arithmetic number, because the mean of its divisors is an integer number (157290).

2⁹⁸⁸⁶³⁶ is an apocalyptic number.

It is an amenable number.

988636 is a deficient number, since it is larger than the sum of its proper divisors (898844).

988636 is a wasteful number, since it uses less digits than its factorization.

988636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22484 (or 22482 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 988636 is about 994.3017650593. The cubic root of 988636 is about 99.6197559774.

The spelling of 988636 in words is "nine hundred eighty-eight thousand, six hundred thirty-six".