6678777 has 16 divisors (see below), whose sum is σ = 10426752. Its totient is φ = 3722880.

The previous prime is 6678767. The next prime is 6678779. The reversal of 6678777 is 7778766.

It is not a de Polignac number, because 6678777 - 2⁶ = 6678713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6678779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3018 + ... + 4739.

It is an arithmetic number, because the mean of its divisors is an integer number (651672).

Almost surely, 2^6678777 is an apocalyptic number.

It is an amenable number.

6678777 is a deficient number, since it is larger than the sum of its proper divisors (3747975).

6678777 is a wasteful number, since it uses less digits than its factorization.

6678777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7808.

The product of its digits is 691488, while the sum is 48.

The square root of 6678777 is about 2584.3329893804. The cubic root of 6678777 is about 188.3210994394.

The spelling of 6678777 in words is "six million, six hundred seventy-eight thousand, seven hundred seventy-seven".