716065909 has 4 divisors (see below), whose sum is σ = 771147916. Its totient is φ = 660983904.

The previous prime is 716065907. The next prime is 716065913. The reversal of 716065909 is 909560617.

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 123143409 + 592922500 = 11097^2 + 24350^2 .

It is a cyclic number.

It is not a de Polignac number, because 716065909 - 2¹ = 716065907 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 (716065907) 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, 27540984 + ... + 27541009.

It is an arithmetic number, because the mean of its divisors is an integer number (192786979).

Almost surely, 2^716065909 is an apocalyptic number.

It is an amenable number.

716065909 is a deficient number, since it is larger than the sum of its proper divisors (55082007).

716065909 is a wasteful number, since it uses less digits than its factorization.

716065909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55082006.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 716065909 is about 26759.4078596669. The cubic root of 716065909 is about 894.6455361105.

The spelling of 716065909 in words is "seven hundred sixteen million, sixty-five thousand, nine hundred nine".