6406331 has 8 divisors (see below), whose sum is σ = 6822144. Its totient is φ = 5994880.

The previous prime is 6406321. The next prime is 6406343. The reversal of 6406331 is 1336046.

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-6406331 is a prime.

It is a super-2 number, since 2×6406331² = 82082153763122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6406297 and 6406306.

It is not an unprimeable number, because it can be changed into a prime (6406321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2261 + ... + 4233.

It is an arithmetic number, because the mean of its divisors is an integer number (852768).

Almost surely, 2^6406331 is an apocalyptic number.

6406331 is a deficient number, since it is larger than the sum of its proper divisors (415813).

6406331 is a wasteful number, since it uses less digits than its factorization.

6406331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 6406331 is about 2531.0730925835. The cubic root of 6406331 is about 185.7247537915.

The spelling of 6406331 in words is "six million, four hundred six thousand, three hundred thirty-one".