6677778 has 24 divisors (see below), whose sum is σ = 14100048. Its totient is φ = 2108088.

The previous prime is 6677777. The next prime is 6677789. The reversal of 6677778 is 8777766.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6677777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 625 + ... + 3707.

It is an arithmetic number, because the mean of its divisors is an integer number (587502).

Almost surely, 2^6677778 is an apocalyptic number.

6677778 is an abundant number, since it is smaller than the sum of its proper divisors (7422270).

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

6677778 is a wasteful number, since it uses less digits than its factorization.

6677778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126 (or 3107 counting only the distinct ones).

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

The square root of 6677778 is about 2584.1397021059. The cubic root of 6677778 is about 188.3117093889.

The spelling of 6677778 in words is "six million, six hundred seventy-seven thousand, seven hundred seventy-eight".