6781369 has 8 divisors (see below), whose sum is σ = 7797888. Its totient is φ = 5776800.

The previous prime is 6781337. The next prime is 6781381. The reversal of 6781369 is 9631876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6781369 - 2⁵ = 6781337 is a prime.

It is a super-2 number, since 2×6781369² = 91973931028322, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6781319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732 + ... + 4069.

It is an arithmetic number, because the mean of its divisors is an integer number (974736).

Almost surely, 2^6781369 is an apocalyptic number.

It is an amenable number.

6781369 is a deficient number, since it is larger than the sum of its proper divisors (1016519).

6781369 is a wasteful number, since it uses less digits than its factorization.

6781369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5975.

The product of its digits is 54432, while the sum is 40.

The square root of 6781369 is about 2604.1061806309. The cubic root of 6781369 is about 189.2804641308.

The spelling of 6781369 in words is "six million, seven hundred eighty-one thousand, three hundred sixty-nine".