6888949812 has 36 divisors (see below), whose sum is σ = 17451550116. Its totient is φ = 2291329920.

The previous prime is 6888949789. The next prime is 6888949817. The reversal of 6888949812 is 2189498886.

6888949812 is a `hidden beast` number, since 68 + 8 + 89 + 498 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5223820176 + 1665129636 = 72276^2 + 40806^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 6888949812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6888949817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190953 + ... + 224144.

It is an arithmetic number, because the mean of its divisors is an integer number (484765281).

Almost surely, 2^6888949812 is an apocalyptic number.

It is an amenable number.

6888949812 is an abundant number, since it is smaller than the sum of its proper divisors (10562600304).

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

6888949812 is a wasteful number, since it uses less digits than its factorization.

6888949812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415568 (or 415563 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 63.

The square root of 6888949812 is about 82999.6976621000. The cubic root of 6888949812 is about 1902.7614335647.

The spelling of 6888949812 in words is "six billion, eight hundred eighty-eight million, nine hundred forty-nine thousand, eight hundred twelve".