6878545969 has 9 divisors (see below), whose sum is σ = 6930100641. Its totient is φ = 6827373840.

The previous prime is 6878545963. The next prime is 6878545981. The reversal of 6878545969 is 9695458786.

The square root of 6878545969 is 82937.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 37271025 + 6841274944 = 6105^2 + 82712^2 .

It is not a de Polignac number, because 6878545969 - 2¹⁹ = 6878021681 is a prime.

It is a super-2 number, since 2×6878545969² = 94628789295292297922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6878545963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16338379 + ... + 16338799.

Almost surely, 2^6878545969 is an apocalyptic number.

6878545969 is the 82937-th square number.

6878545969 is the 41469-th centered octagonal number.

It is an amenable number.

6878545969 is a deficient number, since it is larger than the sum of its proper divisors (51554672).

6878545969 is an frugal number, since it uses more digits than its factorization.

6878545969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236 (or 618 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 67.

The cubic root of 6878545969 is about 1901.8030869565.

The spelling of 6878545969 in words is "six billion, eight hundred seventy-eight million, five hundred forty-five thousand, nine hundred sixty-nine".