6720961064 has 16 divisors (see below), whose sum is σ = 12654532800. Its totient is φ = 3346418992.

The previous prime is 6720961063. The next prime is 6720961073. The reversal of 6720961064 is 4601690276.

It is not an unprimeable number, because it can be changed into a prime (6720961061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1755662 + ... + 1759485.

It is an arithmetic number, because the mean of its divisors is an integer number (790908300).

Almost surely, 2^6720961064 is an apocalyptic number.

It is an amenable number.

6720961064 is a deficient number, since it is larger than the sum of its proper divisors (5933571736).

6720961064 is a wasteful number, since it uses less digits than its factorization.

6720961064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3515392 (or 3515388 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 6720961064 is about 81981.4678082797. The cubic root of 6720961064 is about 1887.1675482719.

The spelling of 6720961064 in words is "six billion, seven hundred twenty million, nine hundred sixty-one thousand, sixty-four".