6699771443 has 8 divisors (see below), whose sum is σ = 6815739216. Its totient is φ = 6584457600.

The previous prime is 6699771439. The next prime is 6699771457. The reversal of 6699771443 is 3441779966.

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 6699771443 - 2² = 6699771439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6699771413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142793 + ... + 183818.

It is an arithmetic number, because the mean of its divisors is an integer number (851967402).

Almost surely, 2^6699771443 is an apocalyptic number.

6699771443 is a deficient number, since it is larger than the sum of its proper divisors (115967773).

6699771443 is a wasteful number, since it uses less digits than its factorization.

6699771443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326965.

The product of its digits is 6858432, while the sum is 56.

The square root of 6699771443 is about 81852.1315727330. The cubic root of 6699771443 is about 1885.1821941361.

The spelling of 6699771443 in words is "six billion, six hundred ninety-nine million, seven hundred seventy-one thousand, four hundred forty-three".