6699428784 has 80 divisors (see below), whose sum is σ = 19473356800. Its totient is φ = 2204864064.

The previous prime is 6699428783. The next prime is 6699428789. The reversal of 6699428784 is 4878249966.

It is not an unprimeable number, because it can be changed into a prime (6699428783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64024 + ... + 132279.

It is an arithmetic number, because the mean of its divisors is an integer number (243416960).

Almost surely, 2^6699428784 is an apocalyptic number.

It is an amenable number.

6699428784 is an abundant number, since it is smaller than the sum of its proper divisors (12773928016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6699428784 is a wasteful number, since it uses less digits than its factorization.

6699428784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196399 (or 196387 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

The square root of 6699428784 is about 81850.0383872848. The cubic root of 6699428784 is about 1885.1500544498.

The spelling of 6699428784 in words is "six billion, six hundred ninety-nine million, four hundred twenty-eight thousand, seven hundred eighty-four".