5221679647 has 4 divisors (see below), whose sum is σ = 5223251520. Its totient is φ = 5220107776.

The previous prime is 5221679611. The next prime is 5221679689. The reversal of 5221679647 is 7469761225.

It is a happy number.

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 5221679647 - 2¹¹ = 5221677599 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5221679647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221679147) 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, 780943 + ... + 787600.

It is an arithmetic number, because the mean of its divisors is an integer number (1305812880).

Almost surely, 2^5221679647 is an apocalyptic number.

5221679647 is a deficient number, since it is larger than the sum of its proper divisors (1571873).

5221679647 is a wasteful number, since it uses less digits than its factorization.

5221679647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571872.

The product of its digits is 1270080, while the sum is 49.

The square root of 5221679647 is about 72261.1904621007. The cubic root of 5221679647 is about 1734.8825337177.

The spelling of 5221679647 in words is "five billion, two hundred twenty-one million, six hundred seventy-nine thousand, six hundred forty-seven".