6747321 has 8 divisors (see below), whose sum is σ = 10281664. Its totient is φ = 3855600.

The previous prime is 6747289. The next prime is 6747331. The reversal of 6747321 is 1237476.

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

It is not a de Polignac number, because 6747321 - 2⁵ = 6747289 is a prime.

It is a Duffinian number.

6747321 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6747331) 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, 160630 + ... + 160671.

It is an arithmetic number, because the mean of its divisors is an integer number (1285208).

Almost surely, 2^6747321 is an apocalyptic number.

It is an amenable number.

6747321 is a deficient number, since it is larger than the sum of its proper divisors (3534343).

6747321 is a wasteful number, since it uses less digits than its factorization.

6747321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321311.

The product of its digits is 7056, while the sum is 30.

The square root of 6747321 is about 2597.5605863964. The cubic root of 6747321 is about 188.9631517425.

The spelling of 6747321 in words is "six million, seven hundred forty-seven thousand, three hundred twenty-one".