666055304 has 8 divisors (see below), whose sum is σ = 1248853710. Its totient is φ = 333027648.

The previous prime is 666055303. The next prime is 666055309. The reversal of 666055304 is 403550666.

It can be written as a sum of positive squares in only one way, i.e., 413308900 + 252746404 = 20330^2 + 15898^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (666055303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41628449 + ... + 41628464.

Almost surely, 2^666055304 is an apocalyptic number.

It is an amenable number.

666055304 is a deficient number, since it is larger than the sum of its proper divisors (582798406).

666055304 is a wasteful number, since it uses less digits than its factorization.

666055304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83256919 (or 83256915 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 666055304 is about 25808.0472721204. The cubic root of 666055304 is about 873.3133458252.

The spelling of 666055304 in words is "six hundred sixty-six million, fifty-five thousand, three hundred four".