6814172305 has 8 divisors (see below), whose sum is σ = 8658007272. Its totient is φ = 5130670848.

The previous prime is 6814172291. The next prime is 6814172333. The reversal of 6814172305 is 5032714186.

It is a Cunningham number, because it is equal to 82548²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 159365376 + 6654806929 = 12624^2 + 81577^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6814172305 - 2¹⁷ = 6814041233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40083282 + ... + 40083451.

It is an arithmetic number, because the mean of its divisors is an integer number (1082250909).

Almost surely, 2^6814172305 is an apocalyptic number.

It is an amenable number.

6814172305 is a deficient number, since it is larger than the sum of its proper divisors (1843834967).

6814172305 is a wasteful number, since it uses less digits than its factorization.

6814172305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80166755.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 6814172305 is about 82548.0000060571. Note that the first 5 decimals coincide. The cubic root of 6814172305 is about 1895.8517350139.

The spelling of 6814172305 in words is "six billion, eight hundred fourteen million, one hundred seventy-two thousand, three hundred five".