7091688689 has 4 divisors (see below), whose sum is σ = 7125298800. Its totient is φ = 7058078580.

The previous prime is 7091688683. The next prime is 7091688701. The reversal of 7091688689 is 9868861907.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9868861907 = 29 ⋅340305583.

It is a cyclic number.

It is not a de Polignac number, because 7091688689 - 2³² = 2796721393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7091688683) 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, 16804739 + ... + 16805160.

It is an arithmetic number, because the mean of its divisors is an integer number (1781324700).

Almost surely, 2^7091688689 is an apocalyptic number.

It is an amenable number.

7091688689 is a deficient number, since it is larger than the sum of its proper divisors (33610111).

7091688689 is a wasteful number, since it uses less digits than its factorization.

7091688689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33610110.

The product of its (nonzero) digits is 10450944, while the sum is 62.

The square root of 7091688689 is about 84212.1647328935. The cubic root of 7091688689 is about 1921.2470819798.

The spelling of 7091688689 in words is "seven billion, ninety-one million, six hundred eighty-eight thousand, six hundred eighty-nine".