8981660 has 12 divisors (see below), whose sum is σ = 18861528. Its totient is φ = 3592656.

The previous prime is 8981659. The next prime is 8981689. The reversal of 8981660 is 661898.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224522 + ... + 224561.

It is an arithmetic number, because the mean of its divisors is an integer number (1571794).

Almost surely, 2^8981660 is an apocalyptic number.

It is an amenable number.

8981660 is an abundant number, since it is smaller than the sum of its proper divisors (9879868).

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

8981660 is a wasteful number, since it uses less digits than its factorization.

8981660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449092 (or 449090 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 8981660 is about 2996.9417745428. The cubic root of 8981660 is about 207.8669946031.

The spelling of 8981660 in words is "eight million, nine hundred eighty-one thousand, six hundred sixty".