718097729 has 2 divisors, whose sum is σ = 718097730. Its totient is φ = 718097728.

The previous prime is 718097719. The next prime is 718097749. The reversal of 718097729 is 927790817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 681471025 + 36626704 = 26105^2 + 6052^2 .

It is a cyclic number.

It is not a de Polignac number, because 718097729 - 2⁴ = 718097713 is a prime.

It is not a weakly prime, because it can be changed into another prime (718097719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359048864 + 359048865.

It is an arithmetic number, because the mean of its divisors is an integer number (359048865).

Almost surely, 2^718097729 is an apocalyptic number.

It is an amenable number.

718097729 is a deficient number, since it is larger than the sum of its proper divisors (1).

718097729 is an equidigital number, since it uses as much as digits as its factorization.

718097729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 50.

The square root of 718097729 is about 26797.3455588422. The cubic root of 718097729 is about 895.4909155153.

The spelling of 718097729 in words is "seven hundred eighteen million, ninety-seven thousand, seven hundred twenty-nine".