6398331 has 4 divisors (see below), whose sum is σ = 8531112. Its totient is φ = 4265552.

The previous prime is 6398317. The next prime is 6398339. The reversal of 6398331 is 1338936.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6398331 - 2⁶ = 6398267 is a prime.

It is a super-2 number, since 2×6398331² = 81877279171122, which contains 22 as substring.

It is a D-number.

6398331 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6398292 and 6398301.

It is not an unprimeable number, because it can be changed into a prime (6398339) 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, 1066386 + ... + 1066391.

It is an arithmetic number, because the mean of its divisors is an integer number (2132778).

Almost surely, 2^6398331 is an apocalyptic number.

6398331 is a deficient number, since it is larger than the sum of its proper divisors (2132781).

6398331 is a wasteful number, since it uses less digits than its factorization.

6398331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132780.

The product of its digits is 11664, while the sum is 33.

The square root of 6398331 is about 2529.4922415378. The cubic root of 6398331 is about 185.6474127502.

The spelling of 6398331 in words is "six million, three hundred ninety-eight thousand, three hundred thirty-one".