6691726983 has 16 divisors (see below), whose sum is σ = 9944363520. Its totient is φ = 3977744256.

The previous prime is 6691726967. The next prime is 6691726997. The reversal of 6691726983 is 3896271966.

It is a happy number.

It is not a de Polignac number, because 6691726983 - 2⁴ = 6691726967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6691726913) 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 15 ways as a sum of consecutive naturals, for example, 3451935 + ... + 3453872.

It is an arithmetic number, because the mean of its divisors is an integer number (621522720).

Almost surely, 2^6691726983 is an apocalyptic number.

6691726983 is a deficient number, since it is larger than the sum of its proper divisors (3252636537).

6691726983 is a wasteful number, since it uses less digits than its factorization.

6691726983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6905846.

The product of its digits is 5878656, while the sum is 57.

The square root of 6691726983 is about 81802.9766145462. The cubic root of 6691726983 is about 1884.4273750294.

The spelling of 6691726983 in words is "six billion, six hundred ninety-one million, seven hundred twenty-six thousand, nine hundred eighty-three".