7327678609 has 4 divisors (see below), whose sum is σ = 7327851300. Its totient is φ = 7327505920.

The previous prime is 7327678597. The next prime is 7327678613. The reversal of 7327678609 is 9068767237.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9068767237 = 39209 ⋅231293.

It can be written as a sum of positive squares in 2 ways, for example, as 6389604225 + 938074384 = 79935^2 + 30628^2 .

It is a cyclic number.

It is not a de Polignac number, because 7327678609 - 2²⁵ = 7294124177 is a prime.

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 7327678609.

It is not an unprimeable number, because it can be changed into a prime (7327678409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26217 + ... + 123865.

It is an arithmetic number, because the mean of its divisors is an integer number (1831962825).

Almost surely, 2^7327678609 is an apocalyptic number.

It is an amenable number.

7327678609 is a deficient number, since it is larger than the sum of its proper divisors (172691).

7327678609 is an equidigital number, since it uses as much as digits as its factorization.

7327678609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172690.

The product of its (nonzero) digits is 5334336, while the sum is 55.

The square root of 7327678609 is about 85601.8610136485. The cubic root of 7327678609 is about 1942.3260625390.

The spelling of 7327678609 in words is "seven billion, three hundred twenty-seven million, six hundred seventy-eight thousand, six hundred nine".