6777867 has 4 divisors (see below), whose sum is σ = 9037160. Its totient is φ = 4518576.

The previous prime is 6777839. The next prime is 6777923. The reversal of 6777867 is 7687776.

6777867 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6777867 - 2⁶ = 6777803 is a prime.

It is a D-number.

It is a Duffinian number.

6777867 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6777367) 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, 1129642 + ... + 1129647.

It is an arithmetic number, because the mean of its divisors is an integer number (2259290).

Almost surely, 2^6777867 is an apocalyptic number.

6777867 is a deficient number, since it is larger than the sum of its proper divisors (2259293).

6777867 is a wasteful number, since it uses less digits than its factorization.

6777867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259292.

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

The square root of 6777867 is about 2603.4336941816. The cubic root of 6777867 is about 189.2478761031.

Subtracting 6777867 from its reverse (7687776), we obtain a palindrome (909909).

The spelling of 6777867 in words is "six million, seven hundred seventy-seven thousand, eight hundred sixty-seven".