6878121 has 8 divisors (see below), whose sum is σ = 9366144. Its totient is φ = 4487760.

The previous prime is 6878107. The next prime is 6878129. The reversal of 6878121 is 1218786.

It is a happy number.

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

It is not a de Polignac number, because 6878121 - 2⁵ = 6878089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6878129) 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, 24250 + ... + 24531.

It is an arithmetic number, because the mean of its divisors is an integer number (1170768).

Almost surely, 2^6878121 is an apocalyptic number.

It is an amenable number.

6878121 is a deficient number, since it is larger than the sum of its proper divisors (2488023).

6878121 is a wasteful number, since it uses less digits than its factorization.

6878121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48831.

The product of its digits is 5376, while the sum is 33.

The square root of 6878121 is about 2622.6172042446. The cubic root of 6878121 is about 190.1763920539.

It can be divided in two parts, 6878 and 121, that multiplied together give a palindrome (832238).

The spelling of 6878121 in words is "six million, eight hundred seventy-eight thousand, one hundred twenty-one".