1066657128 has 16 divisors (see below), whose sum is σ = 2666642880.
Its totient is φ = 355552368.
The previous prime is 1066657087. The next prime is 1066657147. The reversal of 1066657128 is 8217566601.
It is a super-2 number, since 2×10666571282 = 2275514857426416768, 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 1066657128.
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, 22222000 + ... + 22222047.
It is an arithmetic number, because the mean of its divisors is an integer number (166665180).
Almost surely, 21066657128 is an apocalyptic number.
It is an amenable number.
1066657128 is an abundant number, since it is smaller than the sum of its proper divisors (1599985752).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1066657128 is a wasteful number, since it uses less digits than its factorization.
1066657128 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 44444056 (or 44444052 counting only the distinct ones).
The product of its (nonzero) digits is 120960, while the sum is 42.
The square root of 1066657128 is about 32659.7172063691.
The cubic root of 1066657128 is about 1021.7428641947.
The spelling of 1066657128 in words is "one billion, sixty-six million, six hundred fifty-seven thousand, one hundred twenty-eight".