6331921 has 8 divisors (see below), whose sum is σ = 6846080. Its totient is φ = 5835888.

The previous prime is 6331903. The next prime is 6331951. The reversal of 6331921 is 1291336.

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

It is a de Polignac number, because none of the positive numbers 2^k-6331921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6331951) 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, 3801 + ... + 5206.

It is an arithmetic number, because the mean of its divisors is an integer number (855760).

Almost surely, 2^6331921 is an apocalyptic number.

It is an amenable number.

6331921 is a deficient number, since it is larger than the sum of its proper divisors (514159).

6331921 is a wasteful number, since it uses less digits than its factorization.

6331921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9063.

The product of its digits is 972, while the sum is 25.

The square root of 6331921 is about 2516.3308605984. The cubic root of 6331921 is about 185.0028828380.

The spelling of 6331921 in words is "six million, three hundred thirty-one thousand, nine hundred twenty-one".