1660006500 has 48 divisors (see below), whose sum is σ = 4833943296. Its totient is φ = 442668000.

The previous prime is 1660006471. The next prime is 1660006511. The reversal of 1660006500 is 56000661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551836 + ... + 554835.

It is an arithmetic number, because the mean of its divisors is an integer number (100707152).

Almost surely, 2^1660006500 is an apocalyptic number.

1660006500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1660006500 is an abundant number, since it is smaller than the sum of its proper divisors (3173936796).

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

1660006500 is a wasteful number, since it uses less digits than its factorization.

1660006500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106693 (or 1106681 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1660006500 is about 40743.1773429614. The cubic root of 1660006500 is about 1184.0496929853.

The spelling of 1660006500 in words is "one billion, six hundred sixty million, six thousand, five hundred".