6545878 has 16 divisors (see below), whose sum is σ = 10160640. Its totient is φ = 3160936.

The previous prime is 6545863. The next prime is 6545879. The reversal of 6545878 is 8785456.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6545879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7383 + ... + 8221.

It is an arithmetic number, because the mean of its divisors is an integer number (635040).

Almost surely, 2^6545878 is an apocalyptic number.

6545878 is a deficient number, since it is larger than the sum of its proper divisors (3614762).

6545878 is a wasteful number, since it uses less digits than its factorization.

6545878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971.

The product of its digits is 268800, while the sum is 43.

The square root of 6545878 is about 2558.4913523403. The cubic root of 6545878 is about 187.0636061472.

It can be divided in two parts, 65458 and 78, that added together give a 16-th power (65536 = 2¹⁶).

The spelling of 6545878 in words is "six million, five hundred forty-five thousand, eight hundred seventy-eight".