716365665 has 24 divisors (see below), whose sum is σ = 1242806760. Its totient is φ = 381721344.

The previous prime is 716365651. The next prime is 716365667. The reversal of 716365665 is 566563617.

716365665 = T₃₁₉₀ + T₃₁₉₁ + ... + T₃₃₂₄.

716365665 is a `hidden beast` number, since 7 + 1 + 636 + 5 + 6 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 119443041 + 596922624 = 10929^2 + 24432^2 .

It is not a de Polignac number, because 716365665 - 2⁵ = 716365633 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 716365665.

It is not an unprimeable number, because it can be changed into a prime (716365667) 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 23 ways as a sum of consecutive naturals, for example, 48829 + ... + 61781.

It is an arithmetic number, because the mean of its divisors is an integer number (51783615).

Almost surely, 2^716365665 is an apocalyptic number.

It is an amenable number.

716365665 is a deficient number, since it is larger than the sum of its proper divisors (526441095).

716365665 is a wasteful number, since it uses less digits than its factorization.

716365665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14193 (or 14190 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 716365665 is about 26765.0082196886. The cubic root of 716365665 is about 894.7703560709.

The spelling of 716365665 in words is "seven hundred sixteen million, three hundred sixty-five thousand, six hundred sixty-five".