716432281 has 2 divisors, whose sum is σ = 716432282. Its totient is φ = 716432280.

The previous prime is 716432243. The next prime is 716432333. The reversal of 716432281 is 182234617.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 712089225 + 4343056 = 26685^2 + 2084^2 .

It is a cyclic number.

It is not a de Polignac number, because 716432281 - 2⁹ = 716431769 is a prime.

It is a super-2 number, since 2×716432281² = 1026550426517725922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (716432201) 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 as a sum of consecutive naturals, namely, 358216140 + 358216141.

It is an arithmetic number, because the mean of its divisors is an integer number (358216141).

Almost surely, 2^716432281 is an apocalyptic number.

It is an amenable number.

716432281 is a deficient number, since it is larger than the sum of its proper divisors (1).

716432281 is an equidigital number, since it uses as much as digits as its factorization.

716432281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 716432281 is about 26766.2526514266. The cubic root of 716432281 is about 894.7980905913.

Adding to 716432281 its reverse (182234617), we get a palindrome (898666898).

The spelling of 716432281 in words is "seven hundred sixteen million, four hundred thirty-two thousand, two hundred eighty-one".