5647881817 has 4 divisors (see below), whose sum is σ = 5893441920. Its totient is φ = 5402321716.

The previous prime is 5647881809. The next prime is 5647881821. The reversal of 5647881817 is 7181887465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5647881817 - 2³ = 5647881809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5647888817) 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, 122780017 + ... + 122780062.

It is an arithmetic number, because the mean of its divisors is an integer number (1473360480).

Almost surely, 2^5647881817 is an apocalyptic number.

It is an amenable number.

5647881817 is a deficient number, since it is larger than the sum of its proper divisors (245560103).

5647881817 is a wasteful number, since it uses less digits than its factorization.

5647881817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245560102.

The product of its digits is 3010560, while the sum is 55.

The square root of 5647881817 is about 75152.3906273114. The cubic root of 5647881817 is about 1780.8548913956.

The spelling of 5647881817 in words is "five billion, six hundred forty-seven million, eight hundred eighty-one thousand, eight hundred seventeen".