6660395 has 8 divisors (see below), whose sum is σ = 9134304. Its totient is φ = 4567104.

The previous prime is 6660391. The next prime is 6660397. The reversal of 6660395 is 5930666.

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

It is a cyclic number.

It is not a de Polignac number, because 6660395 - 2² = 6660391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 190297 = 6660395 / (6 + 6 + 6 + 0 + 3 + 9 + 5).

It is a d-powerful number, because it can be written as 6 + 6² + 6⁷ + 0 + 3¹³ + 9⁷ + 5⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6660391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95114 + ... + 95183.

It is an arithmetic number, because the mean of its divisors is an integer number (1141788).

Almost surely, 2^6660395 is an apocalyptic number.

6660395 is a deficient number, since it is larger than the sum of its proper divisors (2473909).

6660395 is a wasteful number, since it uses less digits than its factorization.

6660395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190309.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 6660395 is about 2580.7741086736. The cubic root of 6660395 is about 188.1481686163.

The spelling of 6660395 in words is "six million, six hundred sixty thousand, three hundred ninety-five".