716665839 has 8 divisors (see below), whose sum is σ = 981380400. Its totient is φ = 464864256.

The previous prime is 716665799. The next prime is 716665847. The reversal of 716665839 is 938566617.

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

It is not a de Polignac number, because 716665839 - 2⁷ = 716665711 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 716665791 and 716665800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (716660839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3228114 + ... + 3228335.

It is an arithmetic number, because the mean of its divisors is an integer number (122672550).

Almost surely, 2^716665839 is an apocalyptic number.

716665839 is a deficient number, since it is larger than the sum of its proper divisors (264714561).

716665839 is a wasteful number, since it uses less digits than its factorization.

716665839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6456489.

The product of its digits is 1632960, while the sum is 51.

The square root of 716665839 is about 26770.6152151944. The cubic root of 716665839 is about 894.8953152009.

The spelling of 716665839 in words is "seven hundred sixteen million, six hundred sixty-five thousand, eight hundred thirty-nine".