6785478571 has 4 divisors (see below), whose sum is σ = 6785662312. Its totient is φ = 6785294832.

The previous prime is 6785478563. The next prime is 6785478577. The reversal of 6785478571 is 1758745876.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6785478571 - 2³ = 6785478563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6785478577) 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, 15081 + ... + 117466.

It is an arithmetic number, because the mean of its divisors is an integer number (1696415578).

Almost surely, 2^6785478571 is an apocalyptic number.

6785478571 is a deficient number, since it is larger than the sum of its proper divisors (183741).

6785478571 is a wasteful number, since it uses less digits than its factorization.

6785478571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183740.

The product of its digits is 13171200, while the sum is 58.

The square root of 6785478571 is about 82374.0163583153. The cubic root of 6785478571 is about 1893.1869163462.

The spelling of 6785478571 in words is "six billion, seven hundred eighty-five million, four hundred seventy-eight thousand, five hundred seventy-one".