6801909 has 4 divisors (see below), whose sum is σ = 9069216. Its totient is φ = 4534604.

The previous prime is 6801889. The next prime is 6801919. The reversal of 6801909 is 9091086.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6801909 - 2⁵ = 6801877 is a prime.

It is an Ulam number.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6801909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6801919) 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, 1133649 + ... + 1133654.

It is an arithmetic number, because the mean of its divisors is an integer number (2267304).

Almost surely, 2^6801909 is an apocalyptic number.

It is an amenable number.

6801909 is a deficient number, since it is larger than the sum of its proper divisors (2267307).

6801909 is a wasteful number, since it uses less digits than its factorization.

6801909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267306.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 6801909 is about 2608.0469704359. The cubic root of 6801909 is about 189.4713745536.

The spelling of 6801909 in words is "six million, eight hundred one thousand, nine hundred nine".