6663071 has 8 divisors (see below), whose sum is σ = 6914784. Its totient is φ = 6415200.

The previous prime is 6663067. The next prime is 6663073. The reversal of 6663071 is 1703666.

It is a happy number.

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 6663071 - 2² = 6663067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663073) 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, 2846 + ... + 4628.

It is an arithmetic number, because the mean of its divisors is an integer number (864348).

Almost surely, 2^6663071 is an apocalyptic number.

6663071 is a deficient number, since it is larger than the sum of its proper divisors (251713).

6663071 is a wasteful number, since it uses less digits than its factorization.

6663071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 6663071 is about 2581.2925057033. The cubic root of 6663071 is about 188.1733631723.

The spelling of 6663071 in words is "six million, six hundred sixty-three thousand, seventy-one".