666614328 has 32 divisors (see below), whose sum is σ = 1720296960. Its totient is φ = 215036640.

The previous prime is 666614321. The next prime is 666614341. The reversal of 666614328 is 823416666.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 666614328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666614321) 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, 447250 + ... + 448737.

It is an arithmetic number, because the mean of its divisors is an integer number (53759280).

Almost surely, 2^666614328 is an apocalyptic number.

It is an amenable number.

666614328 is an abundant number, since it is smaller than the sum of its proper divisors (1053682632).

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

666614328 is a wasteful number, since it uses less digits than its factorization.

666614328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896027 (or 896023 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

The square root of 666614328 is about 25818.8754209009. The cubic root of 666614328 is about 873.5576031196.

The spelling of 666614328 in words is "six hundred sixty-six million, six hundred fourteen thousand, three hundred twenty-eight".