6668015 has 8 divisors (see below), whose sum is σ = 8015568. Its totient is φ = 5325120.

The previous prime is 6667981. The next prime is 6668021. The reversal of 6668015 is 5108666.

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

It is not a de Polignac number, because 6668015 - 2⁶ = 6667951 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4520 + ... + 5810.

It is an arithmetic number, because the mean of its divisors is an integer number (1001946).

Almost surely, 2^6668015 is an apocalyptic number.

6668015 is a deficient number, since it is larger than the sum of its proper divisors (1347553).

6668015 is a wasteful number, since it uses less digits than its factorization.

6668015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 6668015 is about 2582.2499878982. The cubic root of 6668015 is about 188.2198932234.

The spelling of 6668015 in words is "six million, six hundred sixty-eight thousand, fifteen".