666343258 has 48 divisors (see below), whose sum is σ = 1225684224. Its totient is φ = 270362400.

The previous prime is 666343247. The next prime is 666343273. The reversal of 666343258 is 852343666.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 226191 + ... + 229117.

It is an arithmetic number, because the mean of its divisors is an integer number (25535088).

Almost surely, 2^666343258 is an apocalyptic number.

666343258 is a deficient number, since it is larger than the sum of its proper divisors (559340966).

666343258 is a wasteful number, since it uses less digits than its factorization.

666343258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067 (or 3060 counting only the distinct ones).

The product of its digits is 622080, while the sum is 43.

The square root of 666343258 is about 25813.6254330925. The cubic root of 666343258 is about 873.4391801408.

The spelling of 666343258 in words is "six hundred sixty-six million, three hundred forty-three thousand, two hundred fifty-eight".