716172805 has 8 divisors (see below), whose sum is σ = 859558392. Its totient is φ = 572837568.

The previous prime is 716172803. The next prime is 716172823. The reversal of 716172805 is 508271617.

It can be written as a sum of positive squares in 4 ways, for example, as 1252161 + 714920644 = 1119^2 + 26738^2 .

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 716172805 - 2¹ = 716172803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (716172803) 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 7 ways as a sum of consecutive naturals, for example, 35227 + ... + 51703.

It is an arithmetic number, because the mean of its divisors is an integer number (107444799).

Almost surely, 2^716172805 is an apocalyptic number.

It is an amenable number.

716172805 is a deficient number, since it is larger than the sum of its proper divisors (143385587).

716172805 is a wasteful number, since it uses less digits than its factorization.

716172805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25175.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 716172805 is about 26761.4051387441. The cubic root of 716172805 is about 894.6900521574.

The spelling of 716172805 in words is "seven hundred sixteen million, one hundred seventy-two thousand, eight hundred five".