666029147 has 16 divisors (see below), whose sum is σ = 795320832. Its totient is φ = 545339520.

The previous prime is 666029129. The next prime is 666029149. The reversal of 666029147 is 741920666.

It is a cyclic number.

It is not a de Polignac number, because 666029147 - 2¹⁶ = 665963611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666029149) 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, 143747 + ... + 148307.

It is an arithmetic number, because the mean of its divisors is an integer number (49707552).

Almost surely, 2^666029147 is an apocalyptic number.

666029147 is a deficient number, since it is larger than the sum of its proper divisors (129291685).

666029147 is a wasteful number, since it uses less digits than its factorization.

666029147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5498.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 666029147 is about 25807.5405066039. The cubic root of 666029147 is about 873.3019135632.

The spelling of 666029147 in words is "six hundred sixty-six million, twenty-nine thousand, one hundred forty-seven".