988765 has 4 divisors (see below), whose sum is σ = 1186524. Its totient is φ = 791008.

The previous prime is 988763. The next prime is 988783. The reversal of 988765 is 567889.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 381924 + 606841 = 618^2 + 779^2 .

It is a cyclic number.

It is not a de Polignac number, because 988765 - 2¹ = 988763 is a prime.

It is a Duffinian number.

988765 is a lucky number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988763) 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, 98872 + ... + 98881.

It is an arithmetic number, because the mean of its divisors is an integer number (296631).

2⁹⁸⁸⁷⁶⁵ is an apocalyptic number.

It is an amenable number.

988765 is a deficient number, since it is larger than the sum of its proper divisors (197759).

988765 is a wasteful number, since it uses less digits than its factorization.

988765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197758.

The product of its digits is 120960, while the sum is 43.

The square root of 988765 is about 994.3666325858. The cubic root of 988765 is about 99.6240886774.

The spelling of 988765 in words is "nine hundred eighty-eight thousand, seven hundred sixty-five".