660006279 has 8 divisors (see below), whose sum is σ = 977787120. Its totient is φ = 440004168.

The previous prime is 660006271. The next prime is 660006299. The reversal of 660006279 is 972600066.

It is not a de Polignac number, because 660006279 - 2³ = 660006271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660006271) 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 7 ways as a sum of consecutive naturals, for example, 12222312 + ... + 12222365.

It is an arithmetic number, because the mean of its divisors is an integer number (122223390).

Almost surely, 2^660006279 is an apocalyptic number.

660006279 is a deficient number, since it is larger than the sum of its proper divisors (317780841).

660006279 is a wasteful number, since it uses less digits than its factorization.

660006279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24444686 (or 24444680 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 660006279 is about 25690.5873619114. The cubic root of 660006279 is about 870.6615301522.

The spelling of 660006279 in words is "six hundred sixty million, six thousand, two hundred seventy-nine".