6678429 has 8 divisors (see below), whose sum is σ = 9012192. Its totient is φ = 4398480.

The previous prime is 6678421. The next prime is 6678431. The reversal of 6678429 is 9248766.

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

It is not a de Polignac number, because 6678429 - 2³ = 6678421 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6678421) 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, 13162 + ... + 13659.

It is an arithmetic number, because the mean of its divisors is an integer number (1126524).

Almost surely, 2^6678429 is an apocalyptic number.

It is an amenable number.

6678429 is a deficient number, since it is larger than the sum of its proper divisors (2333763).

6678429 is a wasteful number, since it uses less digits than its factorization.

6678429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26907.

The product of its digits is 145152, while the sum is 42.

The square root of 6678429 is about 2584.2656597184. The cubic root of 6678429 is about 188.3178285371.

The spelling of 6678429 in words is "six million, six hundred seventy-eight thousand, four hundred twenty-nine".