719660489 has 2 divisors, whose sum is σ = 719660490. Its totient is φ = 719660488.

The previous prime is 719660483. The next prime is 719660519. The reversal of 719660489 is 984066917.

719660489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 620856889 + 98803600 = 24917^2 + 9940^2 .

It is an emirp because it is prime and its reverse (984066917) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-719660489 is a prime.

It is a super-2 number, since 2×719660489² = 1035822438855438242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (719660483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359830244 + 359830245.

It is an arithmetic number, because the mean of its divisors is an integer number (359830245).

Almost surely, 2^719660489 is an apocalyptic number.

It is an amenable number.

719660489 is a deficient number, since it is larger than the sum of its proper divisors (1).

719660489 is an equidigital number, since it uses as much as digits as its factorization.

719660489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 719660489 is about 26826.4885700682. The cubic root of 719660489 is about 896.1400488097.

The spelling of 719660489 in words is "seven hundred nineteen million, six hundred sixty thousand, four hundred eighty-nine".