6663371 has 16 divisors (see below), whose sum is σ = 8291808. Its totient is φ = 5260800.

The previous prime is 6663347. The next prime is 6663383. The reversal of 6663371 is 1733666.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6663371 - 2¹⁰ = 6662347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6663311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1061 + ... + 3801.

It is an arithmetic number, because the mean of its divisors is an integer number (518238).

Almost surely, 2^6663371 is an apocalyptic number.

6663371 is a deficient number, since it is larger than the sum of its proper divisors (1628437).

6663371 is a wasteful number, since it uses less digits than its factorization.

6663371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782.

The product of its digits is 13608, while the sum is 32.

The square root of 6663371 is about 2581.3506154725. The cubic root of 6663371 is about 188.1761872536.

The spelling of 6663371 in words is "six million, six hundred sixty-three thousand, three hundred seventy-one".