6721463727 has 24 divisors (see below), whose sum is σ = 10945272240. Its totient is φ = 4073612400.

The previous prime is 6721463663. The next prime is 6721463729. The reversal of 6721463727 is 7273641276.

6721463727 is a `hidden beast` number, since 6 + 7 + 2 + 1 + 4 + 637 + 2 + 7 = 666.

6721463727 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6721463727 - 2⁶ = 6721463663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721463729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1025424 + ... + 1031957.

It is an arithmetic number, because the mean of its divisors is an integer number (456053010).

Almost surely, 2^6721463727 is an apocalyptic number.

6721463727 is a deficient number, since it is larger than the sum of its proper divisors (4223808513).

6721463727 is a wasteful number, since it uses less digits than its factorization.

6721463727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057412 (or 2057395 counting only the distinct ones).

The product of its digits is 592704, while the sum is 45.

The square root of 6721463727 is about 81984.5334621110. The cubic root of 6721463727 is about 1887.2145944033.

The spelling of 6721463727 in words is "six billion, seven hundred twenty-one million, four hundred sixty-three thousand, seven hundred twenty-seven".