6677878 has 4 divisors (see below), whose sum is σ = 10016820. Its totient is φ = 3338938.

The previous prime is 6677861. The next prime is 6677887. The reversal of 6677878 is 8787766.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1669468 + ... + 1669471.

It is an arithmetic number, because the mean of its divisors is an integer number (2504205).

Almost surely, 2^6677878 is an apocalyptic number.

6677878 is a deficient number, since it is larger than the sum of its proper divisors (3338942).

6677878 is a wasteful number, since it uses less digits than its factorization.

6677878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338941.

The product of its digits is 790272, while the sum is 49.

The square root of 6677878 is about 2584.1590508326. The cubic root of 6677878 is about 188.3126493761.

The spelling of 6677878 in words is "six million, six hundred seventy-seven thousand, eight hundred seventy-eight".