6506878 has 8 divisors (see below), whose sum is σ = 11154672. Its totient is φ = 2788656.

The previous prime is 6506813. The next prime is 6506881. The reversal of 6506878 is 8786056.

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

It is a super-2 number, since 2×6506878² = 84678922613768, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6506878.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 232375 + ... + 232402.

It is an arithmetic number, because the mean of its divisors is an integer number (1394334).

Almost surely, 2^6506878 is an apocalyptic number.

6506878 is a deficient number, since it is larger than the sum of its proper divisors (4647794).

6506878 is a wasteful number, since it uses less digits than its factorization.

6506878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464786.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 6506878 is about 2550.8582869301. The cubic root of 6506878 is about 186.6913608204.

The spelling of 6506878 in words is "six million, five hundred six thousand, eight hundred seventy-eight".