6759921 has 8 divisors (see below), whose sum is σ = 10300864. Its totient is φ = 3862800.

The previous prime is 6759917. The next prime is 6759943. The reversal of 6759921 is 1299576.

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

It is not a de Polignac number, because 6759921 - 2² = 6759917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6759921.

It is not an unprimeable number, because it can be changed into a prime (6759911) 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 7 ways as a sum of consecutive naturals, for example, 160930 + ... + 160971.

It is an arithmetic number, because the mean of its divisors is an integer number (1287608).

Almost surely, 2^6759921 is an apocalyptic number.

It is an amenable number.

6759921 is a deficient number, since it is larger than the sum of its proper divisors (3540943).

6759921 is a wasteful number, since it uses less digits than its factorization.

6759921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321911.

The product of its digits is 34020, while the sum is 39.

The square root of 6759921 is about 2599.9848076479. The cubic root of 6759921 is about 189.0807023569.

The spelling of 6759921 in words is "six million, seven hundred fifty-nine thousand, nine hundred twenty-one".