6715721775 has 48 divisors (see below), whose sum is σ = 12701274368. Its totient is φ = 3067200000.

The previous prime is 6715721737. The next prime is 6715721809. The reversal of 6715721775 is 5771275176.

It is not a de Polignac number, because 6715721775 - 2⁶ = 6715721711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 625200 + ... + 635850.

Almost surely, 2^6715721775 is an apocalyptic number.

6715721775 is a deficient number, since it is larger than the sum of its proper divisors (5985552593).

6715721775 is a wasteful number, since it uses less digits than its factorization.

6715721775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11872 (or 11867 counting only the distinct ones).

The product of its digits is 720300, while the sum is 48.

The square root of 6715721775 is about 81949.5074725895. The cubic root of 6715721775 is about 1886.6770436936.

The spelling of 6715721775 in words is "six billion, seven hundred fifteen million, seven hundred twenty-one thousand, seven hundred seventy-five".