666214241305 has 8 divisors (see below), whose sum is σ = 799507537992. Its totient is φ = 532937760768.

The previous prime is 666214241299. The next prime is 666214241309. The reversal of 666214241305 is 503142412666.

666214241305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 158261548041 + 507952693264 = 397821^2 + 712708^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 666214241305 - 2⁷ = 666214241177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666214241309) 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, 4116712 + ... + 4275481.

It is an arithmetic number, because the mean of its divisors is an integer number (99938442249).

Almost surely, 2^666214241305 is an apocalyptic number.

It is an amenable number.

666214241305 is a deficient number, since it is larger than the sum of its proper divisors (133293296687).

666214241305 is a wasteful number, since it uses less digits than its factorization.

666214241305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8408075.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 666214241305 in words is "six hundred sixty-six billion, two hundred fourteen million, two hundred forty-one thousand, three hundred five".