666634106 has 32 divisors (see below), whose sum is σ = 1080304128. Its totient is φ = 307869120.

The previous prime is 666634103. The next prime is 666634109. The reversal of 666634106 is 601436666.

It is an interprime number because it is at equal distance from previous prime (666634103) and next prime (666634109).

It is a self number, because there is not a number n which added to its sum of digits gives 666634106.

It is not an unprimeable number, because it can be changed into a prime (666634103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118841 + ... + 124323.

It is an arithmetic number, because the mean of its divisors is an integer number (33759504).

Almost surely, 2^666634106 is an apocalyptic number.

666634106 is a deficient number, since it is larger than the sum of its proper divisors (413670022).

666634106 is a wasteful number, since it uses less digits than its factorization.

666634106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5606.

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 666634106 is about 25819.2584324182. The cubic root of 666634106 is about 873.5662423236.

The spelling of 666634106 in words is "six hundred sixty-six million, six hundred thirty-four thousand, one hundred six".