6664145 has 8 divisors (see below), whose sum is σ = 8016000. Its totient is φ = 5318640.

The previous prime is 6664139. The next prime is 6664159. The reversal of 6664145 is 5414666.

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

It is not a de Polignac number, because 6664145 - 2¹⁰ = 6663121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1160 + ... + 3830.

It is an arithmetic number, because the mean of its divisors is an integer number (1002000).

Almost surely, 2^6664145 is an apocalyptic number.

It is an amenable number.

6664145 is a deficient number, since it is larger than the sum of its proper divisors (1351855).

6664145 is a wasteful number, since it uses less digits than its factorization.

6664145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3175.

The product of its digits is 17280, while the sum is 32.

The square root of 6664145 is about 2581.5005326360. The cubic root of 6664145 is about 188.1834729918.

The spelling of 6664145 in words is "six million, six hundred sixty-four thousand, one hundred forty-five".