988775 has 6 divisors (see below), whose sum is σ = 1226112. Its totient is φ = 791000.

The previous prime is 988763. The next prime is 988783. The reversal of 988775 is 577889.

It is not a de Polignac number, because 988775 - 2⁴ = 988759 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19751 + ... + 19800.

It is an arithmetic number, because the mean of its divisors is an integer number (204352).

2⁹⁸⁸⁷⁷⁵ is an apocalyptic number.

988775 is a deficient number, since it is larger than the sum of its proper divisors (237337).

988775 is a wasteful number, since it uses less digits than its factorization.

988775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39561 (or 39556 counting only the distinct ones).

The product of its digits is 141120, while the sum is 44.

The square root of 988775 is about 994.3716608995. The cubic root of 988775 is about 99.6244245299.

The spelling of 988775 in words is "nine hundred eighty-eight thousand, seven hundred seventy-five".