2066428321 has 8 divisors (see below), whose sum is σ = 2138209920. Its totient is φ = 1994681808.

The previous prime is 2066428279. The next prime is 2066428327. The reversal of 2066428321 is 1238246602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2066428321 - 2⁷ = 2066428193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066428327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180840 + ... + 191926.

It is an arithmetic number, because the mean of its divisors is an integer number (267276240).

Almost surely, 2^2066428321 is an apocalyptic number.

It is an amenable number.

2066428321 is a deficient number, since it is larger than the sum of its proper divisors (71781599).

2066428321 is a wasteful number, since it uses less digits than its factorization.

2066428321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17543.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 2066428321 is about 45457.9841282035. The cubic root of 2066428321 is about 1273.7184757227.

The spelling of 2066428321 in words is "two billion, sixty-six million, four hundred twenty-eight thousand, three hundred twenty-one".