6456678 has 8 divisors (see below), whose sum is σ = 12913368. Its totient is φ = 2152224.

The previous prime is 6456661. The next prime is 6456679. The reversal of 6456678 is 8766546.

It is a happy number.

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

6456678 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6456679) 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, 538051 + ... + 538062.

It is an arithmetic number, because the mean of its divisors is an integer number (1614171).

Almost surely, 2^6456678 is an apocalyptic number.

6456678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6456678 is a wasteful number, since it uses less digits than its factorization.

6456678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076118.

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

The square root of 6456678 is about 2540.9994096812. Note that the first 3 decimals coincide. The cubic root of 6456678 is about 186.2100182935.

The spelling of 6456678 in words is "six million, four hundred fifty-six thousand, six hundred seventy-eight".