6696340136 has 24 divisors (see below), whose sum is σ = 12641084670. Its totient is φ = 3325403328.

The previous prime is 6696340109. The next prime is 6696340139. The reversal of 6696340136 is 6310436966.

It can be written as a sum of positive squares in 3 ways, for example, as 6578183236 + 118156900 = 81106^2 + 10870^2 .

It is not an unprimeable number, because it can be changed into a prime (6696340139) 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 5 ways as a sum of consecutive naturals, for example, 2898950 + ... + 2901258.

Almost surely, 2^6696340136 is an apocalyptic number.

It is an amenable number.

6696340136 is a deficient number, since it is larger than the sum of its proper divisors (5944744534).

6696340136 is an equidigital number, since it uses as much as digits as its factorization.

6696340136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4781 (or 2468 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 44.

The square root of 6696340136 is about 81831.1684873191. The cubic root of 6696340136 is about 1884.8603053703.

The spelling of 6696340136 in words is "six billion, six hundred ninety-six million, three hundred forty thousand, one hundred thirty-six".