660164506 has 8 divisors (see below), whose sum is σ = 992315520. Its totient is φ = 329392668.

The previous prime is 660164473. The next prime is 660164513. The reversal of 660164506 is 605461066.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 343596 + ... + 345511.

It is an arithmetic number, because the mean of its divisors is an integer number (124039440).

Almost surely, 2^660164506 is an apocalyptic number.

660164506 is a deficient number, since it is larger than the sum of its proper divisors (332151014).

660164506 is a wasteful number, since it uses less digits than its factorization.

660164506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689588.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 660164506 is about 25693.6666515311. Note that the first 4 decimals coincide. The cubic root of 660164506 is about 870.7311007806.

The spelling of 660164506 in words is "six hundred sixty million, one hundred sixty-four thousand, five hundred six".