6777491 has 4 divisors (see below), whose sum is σ = 7745712. Its totient is φ = 5809272.

The previous prime is 6777469. The next prime is 6777493. The reversal of 6777491 is 1947776.

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

It is not a de Polignac number, because 6777491 - 2¹⁴ = 6761107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6777493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484100 + ... + 484113.

It is an arithmetic number, because the mean of its divisors is an integer number (1936428).

Almost surely, 2^6777491 is an apocalyptic number.

6777491 is a deficient number, since it is larger than the sum of its proper divisors (968221).

6777491 is an equidigital number, since it uses as much as digits as its factorization.

6777491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968220.

The product of its digits is 74088, while the sum is 41.

The square root of 6777491 is about 2603.3614808551. The cubic root of 6777491 is about 189.2443765500.

The spelling of 6777491 in words is "six million, seven hundred seventy-seven thousand, four hundred ninety-one".