7664565289 has 4 divisors (see below), whose sum is σ = 7743581524. Its totient is φ = 7585549056.

The previous prime is 7664565283. The next prime is 7664565301. The reversal of 7664565289 is 9825654667.

7664565289 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 1243267600 + 6421297689 = 35260^2 + 80133^2 .

It is a cyclic number.

It is not a de Polignac number, because 7664565289 - 2²¹ = 7662468137 is a prime.

It is a super-2 number, since 2×7664565289² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7664565283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39507972 + ... + 39508165.

It is an arithmetic number, because the mean of its divisors is an integer number (1935895381).

Almost surely, 2^7664565289 is an apocalyptic number.

It is an amenable number.

7664565289 is a deficient number, since it is larger than the sum of its proper divisors (79016235).

7664565289 is an equidigital number, since it uses as much as digits as its factorization.

7664565289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79016234.

The product of its digits is 21772800, while the sum is 58.

The square root of 7664565289 is about 87547.5030426339. The cubic root of 7664565289 is about 1971.6470622622.

The spelling of 7664565289 in words is "seven billion, six hundred sixty-four million, five hundred sixty-five thousand, two hundred eighty-nine".