6665307828 has 12 divisors (see below), whose sum is σ = 15552384960. Its totient is φ = 2221769272.

The previous prime is 6665307797. The next prime is 6665307833. The reversal of 6665307828 is 8287035666.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277721148 + ... + 277721171.

It is an arithmetic number, because the mean of its divisors is an integer number (1296032080).

Almost surely, 2^6665307828 is an apocalyptic number.

It is an amenable number.

6665307828 is an abundant number, since it is smaller than the sum of its proper divisors (8887077132).

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

6665307828 is a wasteful number, since it uses less digits than its factorization.

6665307828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555442326 (or 555442324 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The square root of 6665307828 is about 81641.3365152727. The cubic root of 6665307828 is about 1881.9441774590.

The spelling of 6665307828 in words is "six billion, six hundred sixty-five million, three hundred seven thousand, eight hundred twenty-eight".