1066989568 has 48 divisors (see below), whose sum is σ = 2159506440. Its totient is φ = 526983168.

The previous prime is 1066989541. The next prime is 1066989577. The reversal of 1066989568 is 8659896601.

It is a super-2 number, since 2×1066989568² = 2276933476441653248, which contains 22 as substring.

It is a zygodrome in base 2.

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, 166846 + ... + 173122.

Almost surely, 2^1066989568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1066989568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079753220).

1066989568 is an abundant number, since it is smaller than the sum of its proper divisors (1092516872).

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

1066989568 is an frugal number, since it uses more digits than its factorization.

1066989568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6382 (or 6362 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 58.

The square root of 1066989568 is about 32664.8062599489. The cubic root of 1066989568 is about 1021.8490004302.

The spelling of 1066989568 in words is "one billion, sixty-six million, nine hundred eighty-nine thousand, five hundred sixty-eight".