8065726720 has 72 divisors (see below), whose sum is σ = 19769371776. Its totient is φ = 3151239168.

The previous prime is 8065726709. The next prime is 8065726741. The reversal of 8065726720 is 276275608.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18232 + ... + 128311.

It is an arithmetic number, because the mean of its divisors is an integer number (274574608).

Almost surely, 2^8065726720 is an apocalyptic number.

8065726720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8065726720 is an abundant number, since it is smaller than the sum of its proper divisors (11703645056).

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

8065726720 is a wasteful number, since it uses less digits than its factorization.

8065726720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146607 (or 146593 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 8065726720 is about 89809.3910457030. The cubic root of 8065726720 is about 2005.4622947533.

The spelling of 8065726720 in words is "eight billion, sixty-five million, seven hundred twenty-six thousand, seven hundred twenty".