555546666 has 8 divisors (see below), whose sum is σ = 1111093344. Its totient is φ = 185182220.

The previous prime is 555546661. The next prime is 555546683. The reversal of 555546666 is 666645555.

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

555546666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (555546661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46295550 + ... + 46295561.

It is an arithmetic number, because the mean of its divisors is an integer number (138886668).

Almost surely, 2^555546666 is an apocalyptic number.

555546666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

555546666 is a wasteful number, since it uses less digits than its factorization.

555546666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92591116.

The product of its digits is 3240000, while the sum is 48.

The square root of 555546666 is about 23570.0374628468. The cubic root of 555546666 is about 822.0663067143.

The spelling of 555546666 in words is "five hundred fifty-five million, five hundred forty-six thousand, six hundred sixty-six".