6720000064 has 14 divisors (see below), whose sum is σ = 13335000254. Its totient is φ = 3360000000.

The previous prime is 6720000059. The next prime is 6720000101. The reversal of 6720000064 is 4600000276.

It can be written as a sum of positive squares in only one way, i.e., 6451302400 + 268697664 = 80320^2 + 16392^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6719999993 and 6720000038.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52499937 + ... + 52500064.

Almost surely, 2^6720000064 is an apocalyptic number.

6720000064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6720000064 is a deficient number, since it is larger than the sum of its proper divisors (6615000190).

6720000064 is a wasteful number, since it uses less digits than its factorization.

6720000064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105000013 (or 105000003 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 6720000064 is about 81975.6065180368. The cubic root of 6720000064 is about 1887.0775981173.

The spelling of 6720000064 in words is "six billion, seven hundred twenty million, sixty-four", and thus it is an aban number.