988659660 has 24 divisors (see below), whose sum is σ = 2768247216. Its totient is φ = 263642560.

The previous prime is 988659649. The next prime is 988659671. The reversal of 988659660 is 66956889.

It is an interprime number because it is at equal distance from previous prime (988659649) and next prime (988659671).

It is a super-2 number, since 2×988659660² = 1954895846622631200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 988659660.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8238771 + ... + 8238890.

It is an arithmetic number, because the mean of its divisors is an integer number (115343634).

Almost surely, 2^988659660 is an apocalyptic number.

It is an amenable number.

988659660 is an abundant number, since it is smaller than the sum of its proper divisors (1779587556).

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

988659660 is a wasteful number, since it uses less digits than its factorization.

988659660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16477673 (or 16477671 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 57.

The square root of 988659660 is about 31442.9588302373. The cubic root of 988659660 is about 996.2055066985.

The spelling of 988659660 in words is "nine hundred eighty-eight million, six hundred fifty-nine thousand, six hundred sixty".