6720523776 has 160 divisors (see below), whose sum is σ = 21064142880. Its totient is φ = 2108325888.

The previous prime is 6720523769. The next prime is 6720523787. The reversal of 6720523776 is 6773250276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220710 + ... + 249306.

It is an arithmetic number, because the mean of its divisors is an integer number (131650893).

Almost surely, 2^6720523776 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 6720523776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10532071440).

6720523776 is an abundant number, since it is smaller than the sum of its proper divisors (14343619104).

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

6720523776 is a wasteful number, since it uses less digits than its factorization.

6720523776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28641 (or 28619 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 45.

The square root of 6720523776 is about 81978.8007719069. The cubic root of 6720523776 is about 1887.1266189259.

The spelling of 6720523776 in words is "six billion, seven hundred twenty million, five hundred twenty-three thousand, seven hundred seventy-six".