1766066128 has 20 divisors (see below), whose sum is σ = 3539745540. Its totient is φ = 852583424.

The previous prime is 1766066123. The next prime is 1766066149. The reversal of 1766066128 is 8216606671.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1353651264 + 412414864 = 36792^2 + 20308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1766066123) 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, 1902625 + ... + 1903552.

It is an arithmetic number, because the mean of its divisors is an integer number (176987277).

Almost surely, 2^1766066128 is an apocalyptic number.

It is an amenable number.

1766066128 is an abundant number, since it is smaller than the sum of its proper divisors (1773679412).

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

1766066128 is a wasteful number, since it uses less digits than its factorization.

1766066128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806214 (or 3806208 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1766066128 is about 42024.5895637304. The cubic root of 1766066128 is about 1208.7476804908.

The spelling of 1766066128 in words is "one billion, seven hundred sixty-six million, sixty-six thousand, one hundred twenty-eight".