666100328 has 32 divisors (see below), whose sum is σ = 1323540000. Its totient is φ = 313392960.

The previous prime is 666100327. The next prime is 666100339. The reversal of 666100328 is 823001666.

It is a junction number, because it is equal to n+sod(n) for n = 666100294 and 666100303.

It is not an unprimeable number, because it can be changed into a prime (666100327) 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, 7943 + ... + 37353.

It is an arithmetic number, because the mean of its divisors is an integer number (41360625).

Almost surely, 2^666100328 is an apocalyptic number.

It is an amenable number.

666100328 is a deficient number, since it is larger than the sum of its proper divisors (657439672).

666100328 is a wasteful number, since it uses less digits than its factorization.

666100328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29585 (or 29581 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 666100328 is about 25808.9195434447. The cubic root of 666100328 is about 873.3330234575. Note that the first 3 decimals are identical.

The spelling of 666100328 in words is "six hundred sixty-six million, one hundred thousand, three hundred twenty-eight".