6540660006 has 32 divisors (see below), whose sum is σ = 13654303488. Its totient is φ = 2084781600.

The previous prime is 6540660001. The next prime is 6540660017. The reversal of 6540660006 is 6000660456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540660001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655656 + ... + 665556.

It is an arithmetic number, because the mean of its divisors is an integer number (426696984).

Almost surely, 2^6540660006 is an apocalyptic number.

6540660006 is an abundant number, since it is smaller than the sum of its proper divisors (7113643482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6540660006 is a wasteful number, since it uses less digits than its factorization.

6540660006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14716.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 6540660006 is about 80874.3470205479. The cubic root of 6540660006 is about 1870.1388751753.

The spelling of 6540660006 in words is "six billion, five hundred forty million, six hundred sixty thousand, six".