5523947665 has 4 divisors (see below), whose sum is σ = 6628737204. Its totient is φ = 4419158128.

The previous prime is 5523947641. The next prime is 5523947687. The reversal of 5523947665 is 5667493255.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1649009664 + 3874938001 = 40608^2 + 62249^2 .

It is a cyclic number.

It is not a de Polignac number, because 5523947665 - 2⁵ = 5523947633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552394762 + ... + 552394771.

It is an arithmetic number, because the mean of its divisors is an integer number (1657184301).

Almost surely, 2^5523947665 is an apocalyptic number.

It is an amenable number.

5523947665 is a deficient number, since it is larger than the sum of its proper divisors (1104789539).

5523947665 is a wasteful number, since it uses less digits than its factorization.

5523947665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104789538.

The product of its digits is 6804000, while the sum is 52.

The square root of 5523947665 is about 74323.2646282441. The cubic root of 5523947665 is about 1767.7323855683.

The spelling of 5523947665 in words is "five billion, five hundred twenty-three million, nine hundred forty-seven thousand, six hundred sixty-five".