6540806 has 8 divisors (see below), whose sum is σ = 9822720. Its totient is φ = 3266568.

The previous prime is 6540739. The next prime is 6540827. The reversal of 6540806 is 6080456.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1280 + ... + 3836.

It is an arithmetic number, because the mean of its divisors is an integer number (1227840).

Almost surely, 2^6540806 is an apocalyptic number.

It is a pronic number, being equal to 2557×2558.

6540806 is a deficient number, since it is larger than the sum of its proper divisors (3281914).

6540806 is a wasteful number, since it uses less digits than its factorization.

6540806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 6540806 is about 2557.4999511241. The cubic root of 6540806 is about 187.0152789521.

The spelling of 6540806 in words is "six million, five hundred forty thousand, eight hundred six".