6885479887 has 32 divisors (see below), whose sum is σ = 8408494080. Its totient is φ = 5553774720.

The previous prime is 6885479869. The next prime is 6885479897. The reversal of 6885479887 is 7889745886.

It is not a de Polignac number, because 6885479887 - 2¹¹ = 6885477839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6885479807) 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 31 ways as a sum of consecutive naturals, for example, 431314 + ... + 446992.

It is an arithmetic number, because the mean of its divisors is an integer number (262765440).

Almost surely, 2^6885479887 is an apocalyptic number.

6885479887 is a deficient number, since it is larger than the sum of its proper divisors (1523014193).

6885479887 is a wasteful number, since it uses less digits than its factorization.

6885479887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15823.

The product of its digits is 216760320, while the sum is 70.

The square root of 6885479887 is about 82978.7917904328. The cubic root of 6885479887 is about 1902.4419098591.

The spelling of 6885479887 in words is "six billion, eight hundred eighty-five million, four hundred seventy-nine thousand, eight hundred eighty-seven".