6678172 has 6 divisors (see below), whose sum is σ = 11686808. Its totient is φ = 3339084.

The previous prime is 6678157. The next prime is 6678173. The reversal of 6678172 is 2718766.

It is a happy number.

It is a super-3 number, since 3×6678172³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6678173) 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 as a sum of consecutive naturals, namely, 834768 + ... + 834775.

Almost surely, 2^6678172 is an apocalyptic number.

It is an amenable number.

6678172 is a deficient number, since it is larger than the sum of its proper divisors (5008636).

6678172 is a wasteful number, since it uses less digits than its factorization.

6678172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669547 (or 1669545 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 6678172 is about 2584.2159352500. The cubic root of 6678172 is about 188.3154128840.

The spelling of 6678172 in words is "six million, six hundred seventy-eight thousand, one hundred seventy-two".