6909715097 has 4 divisors (see below), whose sum is σ = 6938386356. Its totient is φ = 6881043840.

The previous prime is 6909715069. The next prime is 6909715133. The reversal of 6909715097 is 7905179096.

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 6018035776 + 891679321 = 77576^2 + 29861^2 .

It is a cyclic number.

It is not a de Polignac number, because 6909715097 - 2¹² = 6909711001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6909718097) 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, 14335268 + ... + 14335749.

It is an arithmetic number, because the mean of its divisors is an integer number (1734596589).

Almost surely, 2^6909715097 is an apocalyptic number.

It is an amenable number.

6909715097 is a deficient number, since it is larger than the sum of its proper divisors (28671259).

6909715097 is a wasteful number, since it uses less digits than its factorization.

6909715097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28671258.

The product of its (nonzero) digits is 1071630, while the sum is 53.

The square root of 6909715097 is about 83124.6960716248. The cubic root of 6909715097 is about 1904.6713400722.

The spelling of 6909715097 in words is "six billion, nine hundred nine million, seven hundred fifteen thousand, ninety-seven".