6656680943 has 8 divisors (see below), whose sum is σ = 7264765056. Its totient is φ = 6049085400.

The previous prime is 6656680889. The next prime is 6656680963. The reversal of 6656680943 is 3490866566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6656680943 - 2¹⁴ = 6656664559 is a prime.

It is a super-2 number, since 2×6656680943² = 88622802353798738498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656680963) 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 7 ways as a sum of consecutive naturals, for example, 93353 + ... + 148418.

It is an arithmetic number, because the mean of its divisors is an integer number (908095632).

Almost surely, 2^6656680943 is an apocalyptic number.

6656680943 is a deficient number, since it is larger than the sum of its proper divisors (608084113).

6656680943 is a wasteful number, since it uses less digits than its factorization.

6656680943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244285.

The product of its (nonzero) digits is 5598720, while the sum is 53.

The square root of 6656680943 is about 81588.4853579229. The cubic root of 6656680943 is about 1881.1318956212.

The spelling of 6656680943 in words is "six billion, six hundred fifty-six million, six hundred eighty thousand, nine hundred forty-three".