6774842021 has 16 divisors (see below), whose sum is σ = 7040452608. Its totient is φ = 6512332800.

The previous prime is 6774841999. The next prime is 6774842033. The reversal of 6774842021 is 1202484776.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6774842021 - 2¹⁴ = 6774825637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6774842021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6774842071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3432791 + ... + 3434763.

It is an arithmetic number, because the mean of its divisors is an integer number (440028288).

Almost surely, 2^6774842021 is an apocalyptic number.

It is an amenable number.

6774842021 is a deficient number, since it is larger than the sum of its proper divisors (265610587).

6774842021 is a wasteful number, since it uses less digits than its factorization.

6774842021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692.

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 6774842021 is about 82309.4285060952. The cubic root of 6774842021 is about 1892.1971798014.

The spelling of 6774842021 in words is "six billion, seven hundred seventy-four million, eight hundred forty-two thousand, twenty-one".