666029163 has 4 divisors (see below), whose sum is σ = 888038888. Its totient is φ = 444019440.

The previous prime is 666029159. The next prime is 666029191. The reversal of 666029163 is 361920666.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 666029163 - 2² = 666029159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666029153) 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 3 ways as a sum of consecutive naturals, for example, 111004858 + ... + 111004863.

It is an arithmetic number, because the mean of its divisors is an integer number (222009722).

Almost surely, 2^666029163 is an apocalyptic number.

666029163 is a deficient number, since it is larger than the sum of its proper divisors (222009725).

666029163 is a wasteful number, since it uses less digits than its factorization.

666029163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222009724.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 666029163 is about 25807.5408165908. The cubic root of 666029163 is about 873.3019205563.

The spelling of 666029163 in words is "six hundred sixty-six million, twenty-nine thousand, one hundred sixty-three".