5664819671 has 4 divisors (see below), whose sum is σ = 6474079632. Its totient is φ = 4855559712.

The previous prime is 5664819659. The next prime is 5664819673. The reversal of 5664819671 is 1769184665.

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 5664819671 - 2²² = 5660625367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5664819673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404629970 + ... + 404629983.

It is an arithmetic number, because the mean of its divisors is an integer number (1618519908).

Almost surely, 2^5664819671 is an apocalyptic number.

5664819671 is a deficient number, since it is larger than the sum of its proper divisors (809259961).

5664819671 is an equidigital number, since it uses as much as digits as its factorization.

5664819671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809259960.

The product of its digits is 2177280, while the sum is 53.

The square root of 5664819671 is about 75264.9963196704. The cubic root of 5664819671 is about 1782.6333609004.

The spelling of 5664819671 in words is "five billion, six hundred sixty-four million, eight hundred nineteen thousand, six hundred seventy-one".