6665001 has 16 divisors (see below), whose sum is σ = 10405248. Its totient is φ = 3715200.

The previous prime is 6664997. The next prime is 6665011. The reversal of 6665001 is 1005666.

It is not a de Polignac number, because 6665001 - 2² = 6664997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665011) 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, 3010 + ... + 4731.

It is an arithmetic number, because the mean of its divisors is an integer number (650328).

Almost surely, 2^6665001 is an apocalyptic number.

It is an amenable number.

6665001 is a deficient number, since it is larger than the sum of its proper divisors (3740247).

6665001 is a wasteful number, since it uses less digits than its factorization.

6665001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7792.

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

The square root of 6665001 is about 2581.6663223585. Note that the first 3 decimals coincide. The cubic root of 6665001 is about 188.1915299471.

The spelling of 6665001 in words is "six million, six hundred sixty-five thousand, one".