6909924672 has 168 divisors, whose sum is σ = 23474208576. Its totient is φ = 1974233088.

The previous prime is 6909924647. The next prime is 6909924691. The reversal of 6909924672 is 2764299096.

6909924672 is a `hidden beast` number, since 6 + 90 + 9 + 92 + 467 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77128 + ... + 140600.

It is an arithmetic number, because the mean of its divisors is an integer number (139727432).

Almost surely, 2^6909924672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6909924672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11737104288).

6909924672 is an abundant number, since it is smaller than the sum of its proper divisors (16564283904).

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

6909924672 is an equidigital number, since it uses as much as digits as its factorization.

6909924672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63507 (or 63485 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The square root of 6909924672 is about 83125.9566681792. The cubic root of 6909924672 is about 1904.6905964117.

The spelling of 6909924672 in words is "six billion, nine hundred nine million, nine hundred twenty-four thousand, six hundred seventy-two".