6697168647 has 32 divisors (see below), whose sum is σ = 9925628160. Its totient is φ = 3990919680.

The previous prime is 6697168637. The next prime is 6697168651. The reversal of 6697168647 is 7468617966.

It is a happy number.

It is not a de Polignac number, because 6697168647 - 2⁴ = 6697168631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6697168637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132447 + ... + 175887.

It is an arithmetic number, because the mean of its divisors is an integer number (310175880).

Almost surely, 2^6697168647 is an apocalyptic number.

6697168647 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

6697168647 is a deficient number, since it is larger than the sum of its proper divisors (3228459513).

6697168647 is a wasteful number, since it uses less digits than its factorization.

6697168647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43583.

The product of its digits is 18289152, while the sum is 60.

The square root of 6697168647 is about 81836.2306500000. The cubic root of 6697168647 is about 1884.9380375376.

The spelling of 6697168647 in words is "six billion, six hundred ninety-seven million, one hundred sixty-eight thousand, six hundred forty-seven".