6777665163 has 6 divisors (see below), whose sum is σ = 9789960804. Its totient is φ = 4518443436.

The previous prime is 6777665137. The next prime is 6777665177. The reversal of 6777665163 is 3615667776.

It is a happy number.

6777665163 is a `hidden beast` number, since 67 + 7 + 7 + 66 + 516 + 3 = 666.

It is not a de Polignac number, because 6777665163 - 2¹² = 6777661067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6777664163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 376536945 + ... + 376536962.

It is an arithmetic number, because the mean of its divisors is an integer number (1631660134).

Almost surely, 2^6777665163 is an apocalyptic number.

6777665163 is a deficient number, since it is larger than the sum of its proper divisors (3012295641).

6777665163 is a wasteful number, since it uses less digits than its factorization.

6777665163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753073913 (or 753073910 counting only the distinct ones).

The product of its digits is 6667920, while the sum is 54.

The square root of 6777665163 is about 82326.5762861544. The cubic root of 6777665163 is about 1892.4599755721.

The spelling of 6777665163 in words is "six billion, seven hundred seventy-seven million, six hundred sixty-five thousand, one hundred sixty-three".