988787 has 4 divisors (see below), whose sum is σ = 998136. Its totient is φ = 979440.

The previous prime is 988783. The next prime is 988789. The reversal of 988787 is 787889.

988787 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 988787 - 2² = 988783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4514 + ... + 4727.

It is an arithmetic number, because the mean of its divisors is an integer number (249534).

2⁹⁸⁸⁷⁸⁷ is an apocalyptic number.

988787 is a deficient number, since it is larger than the sum of its proper divisors (9349).

988787 is a wasteful number, since it uses less digits than its factorization.

988787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9348.

The product of its digits is 225792, while the sum is 47.

The square root of 988787 is about 994.3776948424. The cubic root of 988787 is about 99.6248275499.

The spelling of 988787 in words is "nine hundred eighty-eight thousand, seven hundred eighty-seven".