6666051 has 8 divisors (see below), whose sum is σ = 10157824. Its totient is φ = 3809160.

The previous prime is 6666047. The next prime is 6666059. The reversal of 6666051 is 1506666.

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

It is not a de Polignac number, because 6666051 - 2² = 6666047 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666059) 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 7 ways as a sum of consecutive naturals, for example, 158695 + ... + 158736.

It is an arithmetic number, because the mean of its divisors is an integer number (1269728).

Almost surely, 2^6666051 is an apocalyptic number.

6666051 is a deficient number, since it is larger than the sum of its proper divisors (3491773).

6666051 is a wasteful number, since it uses less digits than its factorization.

6666051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317441.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 6666051 is about 2581.8696713816. The cubic root of 6666051 is about 188.2014119527.

The spelling of 6666051 in words is "six million, six hundred sixty-six thousand, fifty-one".