6777642 has 16 divisors (see below), whose sum is σ = 14268960. Its totient is φ = 2140272.

The previous prime is 6777637. The next prime is 6777691. The reversal of 6777642 is 2467776.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6777642.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29613 + ... + 29840.

It is an arithmetic number, because the mean of its divisors is an integer number (891810).

Almost surely, 2^6777642 is an apocalyptic number.

6777642 is an abundant number, since it is smaller than the sum of its proper divisors (7491318).

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

6777642 is a wasteful number, since it uses less digits than its factorization.

6777642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59477.

The product of its digits is 98784, while the sum is 39.

The square root of 6777642 is about 2603.3904816604. The cubic root of 6777642 is about 189.2457819712.

The spelling of 6777642 in words is "six million, seven hundred seventy-seven thousand, six hundred forty-two".