660006361 has 8 divisors (see below), whose sum is σ = 754823744. Its totient is φ = 565321680.

The previous prime is 660006349. The next prime is 660006409. The reversal of 660006361 is 163600066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 660006361 - 2⁵ = 660006329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660006161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22275 + ... + 42616.

It is an arithmetic number, because the mean of its divisors is an integer number (94352968).

Almost surely, 2^660006361 is an apocalyptic number.

It is an amenable number.

660006361 is a deficient number, since it is larger than the sum of its proper divisors (94817383).

660006361 is a wasteful number, since it uses less digits than its factorization.

660006361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66351.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 660006361 is about 25690.5889578266. The cubic root of 660006361 is about 870.6615662096.

It can be divided in two parts, 66000 and 6361, that added together give a square (72361 = 269²).

The spelling of 660006361 in words is "six hundred sixty million, six thousand, three hundred sixty-one".