6878655715 has 16 divisors (see below), whose sum is σ = 8397768960. Its totient is φ = 5407414240.

The previous prime is 6878655703. The next prime is 6878655737. The reversal of 6878655715 is 5175568786.

It is not a de Polignac number, because 6878655715 - 2⁷ = 6878655587 is a prime.

It is a super-2 number, since 2×6878655715² = 94631808891004322450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6878655715.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1409730 + ... + 1414600.

It is an arithmetic number, because the mean of its divisors is an integer number (524860560).

Almost surely, 2^6878655715 is an apocalyptic number.

6878655715 is a deficient number, since it is larger than the sum of its proper divisors (1519113245).

6878655715 is a wasteful number, since it uses less digits than its factorization.

6878655715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9722.

The product of its digits is 14112000, while the sum is 58.

The square root of 6878655715 is about 82937.6616200385. The cubic root of 6878655715 is about 1901.8132012148.

The spelling of 6878655715 in words is "six billion, eight hundred seventy-eight million, six hundred fifty-five thousand, seven hundred fifteen".