6878638460 has 24 divisors (see below), whose sum is σ = 14460119520. Its totient is φ = 2748602304.

The previous prime is 6878638427. The next prime is 6878638463. The reversal of 6878638460 is 648368786.

It is a junction number, because it is equal to n+sod(n) for n = 6878638396 and 6878638405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6878638463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158495 + ... + 197174.

It is an arithmetic number, because the mean of its divisors is an integer number (602504980).

Almost surely, 2^6878638460 is an apocalyptic number.

It is an amenable number.

6878638460 is an abundant number, since it is smaller than the sum of its proper divisors (7581481060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6878638460 is a wasteful number, since it uses less digits than its factorization.

6878638460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356645 (or 356643 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 56.

The square root of 6878638460 is about 82937.5575960614. The cubic root of 6878638460 is about 1901.8116109906.

The spelling of 6878638460 in words is "six billion, eight hundred seventy-eight million, six hundred thirty-eight thousand, four hundred sixty".