666066255 has 8 divisors (see below), whose sum is σ = 1065706032. Its totient is φ = 355235328.

The previous prime is 666066251. The next prime is 666066263. The reversal of 666066255 is 552660666.

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

It is not a de Polignac number, because 666066255 - 2² = 666066251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666066251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22202194 + ... + 22202223.

It is an arithmetic number, because the mean of its divisors is an integer number (133213254).

Almost surely, 2^666066255 is an apocalyptic number.

666066255 is a deficient number, since it is larger than the sum of its proper divisors (399639777).

666066255 is a wasteful number, since it uses less digits than its factorization.

666066255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44404425.

The product of its (nonzero) digits is 388800, while the sum is 42.

The square root of 666066255 is about 25808.2594337549. The cubic root of 666066255 is about 873.3181320153.

The spelling of 666066255 in words is "six hundred sixty-six million, sixty-six thousand, two hundred fifty-five".