6678456 has 16 divisors (see below), whose sum is σ = 16696200. Its totient is φ = 2226144.

The previous prime is 6678437. The next prime is 6678457. The reversal of 6678456 is 6548766.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6678457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139111 + ... + 139158.

Almost surely, 2^6678456 is an apocalyptic number.

It is an amenable number.

6678456 is an abundant number, since it is smaller than the sum of its proper divisors (10017744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6678456 is a wasteful number, since it uses less digits than its factorization.

6678456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278278 (or 278274 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 6678456 is about 2584.2708836343. The cubic root of 6678456 is about 188.3180823181.

The spelling of 6678456 in words is "six million, six hundred seventy-eight thousand, four hundred fifty-six".