6678655 has 8 divisors (see below), whose sum is σ = 8036784. Its totient is φ = 5328000.

The previous prime is 6678647. The next prime is 6678667. The reversal of 6678655 is 5568766.

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

It is not a de Polignac number, because 6678655 - 2³ = 6678647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340 + ... + 3670.

It is an arithmetic number, because the mean of its divisors is an integer number (1004598).

Almost surely, 2^6678655 is an apocalyptic number.

6678655 is a deficient number, since it is larger than the sum of its proper divisors (1358129).

6678655 is a wasteful number, since it uses less digits than its factorization.

6678655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737.

The product of its digits is 302400, while the sum is 43.

The square root of 6678655 is about 2584.3093855032. The cubic root of 6678655 is about 188.3199527567.

The spelling of 6678655 in words is "six million, six hundred seventy-eight thousand, six hundred fifty-five".