6923865217 has 4 divisors (see below), whose sum is σ = 7162619220. Its totient is φ = 6685111216.

The previous prime is 6923865211. The next prime is 6923865239. The reversal of 6923865217 is 7125683296.

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 4749415056 + 2174450161 = 68916^2 + 46631^2 .

It is a cyclic number.

It is not a de Polignac number, because 6923865217 - 2⁷ = 6923865089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6923865211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119376958 + ... + 119377015.

It is an arithmetic number, because the mean of its divisors is an integer number (1790654805).

Almost surely, 2^6923865217 is an apocalyptic number.

It is an amenable number.

6923865217 is a deficient number, since it is larger than the sum of its proper divisors (238754003).

6923865217 is a wasteful number, since it uses less digits than its factorization.

6923865217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238754002.

The product of its digits is 1088640, while the sum is 49.

The square root of 6923865217 is about 83209.7663558792. The cubic root of 6923865217 is about 1905.9706194705.

The spelling of 6923865217 in words is "six billion, nine hundred twenty-three million, eight hundred sixty-five thousand, two hundred seventeen".