6660065 has 8 divisors (see below), whose sum is σ = 8019648. Its totient is φ = 5309680.

The previous prime is 6660061. The next prime is 6660091. The reversal of 6660065 is 5600666.

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

It is not a de Polignac number, because 6660065 - 2² = 6660061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6660061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587 + ... + 3696.

It is an arithmetic number, because the mean of its divisors is an integer number (1002456).

Almost surely, 2^6660065 is an apocalyptic number.

It is an amenable number.

6660065 is a deficient number, since it is larger than the sum of its proper divisors (1359583).

6660065 is a wasteful number, since it uses less digits than its factorization.

6660065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4599.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 6660065 is about 2580.7101735763. The cubic root of 6660065 is about 188.1450611970.

The spelling of 6660065 in words is "six million, six hundred sixty thousand, sixty-five".