716206681 has 4 divisors (see below), whose sum is σ = 717861172. Its totient is φ = 714552192.

The previous prime is 716206661. The next prime is 716206703. The reversal of 716206681 is 186602617.

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 253096281 + 463110400 = 15909^2 + 21520^2 .

It is a cyclic number.

It is not a de Polignac number, because 716206681 - 2²⁹ = 179335769 is a prime.

It is a super-2 number, since 2×716206681² = 1025904019818071522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 716206681.

It is not an unprimeable number, because it can be changed into a prime (716206661) 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, 826596 + ... + 827461.

It is an arithmetic number, because the mean of its divisors is an integer number (179465293).

Almost surely, 2^716206681 is an apocalyptic number.

It is an amenable number.

716206681 is a deficient number, since it is larger than the sum of its proper divisors (1654491).

716206681 is a wasteful number, since it uses less digits than its factorization.

716206681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654490.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 716206681 is about 26762.0380576667. The cubic root of 716206681 is about 894.7041586422.

The spelling of 716206681 in words is "seven hundred sixteen million, two hundred six thousand, six hundred eighty-one".