6878777320 has 32 divisors (see below), whose sum is σ = 16387677000. Its totient is φ = 2589657088.

The previous prime is 6878777317. The next prime is 6878777329. The reversal of 6878777320 is 237778786.

It can be written as a sum of positive squares in 4 ways, for example, as 6747308164 + 131469156 = 82142^2 + 11466^2 .

It is not an unprimeable number, because it can be changed into a prime (6878777329) 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, 5057245 + ... + 5058604.

Almost surely, 2^6878777320 is an apocalyptic number.

It is an amenable number.

6878777320 is an abundant number, since it is smaller than the sum of its proper divisors (9508899680).

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

6878777320 is a wasteful number, since it uses less digits than its factorization.

6878777320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10115877 (or 10115873 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 55.

The square root of 6878777320 is about 82938.3947276531. The cubic root of 6878777320 is about 1901.8244082801.

The spelling of 6878777320 in words is "six billion, eight hundred seventy-eight million, seven hundred seventy-seven thousand, three hundred twenty".