6688134148 has 24 divisors (see below), whose sum is σ = 11870199992. Its totient is φ = 3296692224.

The previous prime is 6688134139. The next prime is 6688134149. The reversal of 6688134148 is 8414318866.

It can be written as a sum of positive squares in 4 ways, for example, as 1853991364 + 4834142784 = 43058^2 + 69528^2 .

It is a super-2 number, since 2×6688134148² = 89462276763287371808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6688134149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 830236 + ... + 838252.

Almost surely, 2^6688134148 is an apocalyptic number.

It is an amenable number.

6688134148 is a deficient number, since it is larger than the sum of its proper divisors (5182065844).

6688134148 is a wasteful number, since it uses less digits than its factorization.

6688134148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10951 (or 10949 counting only the distinct ones).

The product of its digits is 884736, while the sum is 49.

The square root of 6688134148 is about 81781.0133710753. The cubic root of 6688134148 is about 1884.0900605761.

The spelling of 6688134148 in words is "six billion, six hundred eighty-eight million, one hundred thirty-four thousand, one hundred forty-eight".