716406205 has 4 divisors (see below), whose sum is σ = 859687452. Its totient is φ = 573124960.

The previous prime is 716406203. The next prime is 716406209. The reversal of 716406205 is 502604617.

It is a happy number.

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 325513764 + 390892441 = 18042^2 + 19771^2 .

It is not a de Polignac number, because 716406205 - 2¹ = 716406203 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (716406203) 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, 71640616 + ... + 71640625.

It is an arithmetic number, because the mean of its divisors is an integer number (214921863).

Almost surely, 2^716406205 is an apocalyptic number.

It is an amenable number.

716406205 is a deficient number, since it is larger than the sum of its proper divisors (143281247).

716406205 is a wasteful number, since it uses less digits than its factorization.

716406205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143281246.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 716406205 is about 26765.7655410788. The cubic root of 716406205 is about 894.7872344650.

The spelling of 716406205 in words is "seven hundred sixteen million, four hundred six thousand, two hundred five".