988660 has 12 divisors (see below), whose sum is σ = 2076228. Its totient is φ = 395456.

The previous prime is 988651. The next prime is 988661. The reversal of 988660 is 66889.

It can be written as a sum of positive squares in 2 ways, for example, as 509796 + 478864 = 714^2 + 692^2 .

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 (988661) 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, 24697 + ... + 24736.

It is an arithmetic number, because the mean of its divisors is an integer number (173019).

2⁹⁸⁸⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

988660 is an abundant number, since it is smaller than the sum of its proper divisors (1087568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

988660 is a wasteful number, since it uses less digits than its factorization.

988660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49442 (or 49440 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 988660 is about 994.3138337567. The cubic root of 988660 is about 99.6205620897.

The spelling of 988660 in words is "nine hundred eighty-eight thousand, six hundred sixty".