6538406 has 16 divisors (see below), whose sum is σ = 11310624. Its totient is φ = 2776704.

The previous prime is 6538403. The next prime is 6538409. The reversal of 6538406 is 6048356.

It is an interprime number because it is at equal distance from previous prime (6538403) and next prime (6538409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6538403) 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, 485 + ... + 3648.

It is an arithmetic number, because the mean of its divisors is an integer number (706914).

Almost surely, 2^6538406 is an apocalyptic number.

6538406 is a deficient number, since it is larger than the sum of its proper divisors (4772218).

6538406 is a wasteful number, since it uses less digits than its factorization.

6538406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4255.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 6538406 is about 2557.0306998548. The cubic root of 6538406 is about 186.9924024862.

The spelling of 6538406 in words is "six million, five hundred thirty-eight thousand, four hundred six".