718668329 has 2 divisors, whose sum is σ = 718668330. Its totient is φ = 718668328.

The previous prime is 718668299. The next prime is 718668341. The reversal of 718668329 is 923866817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 686440000 + 32228329 = 26200^2 + 5677^2 .

It is a cyclic number.

It is not a de Polignac number, because 718668329 - 2¹⁶ = 718602793 is a prime.

It is not a weakly prime, because it can be changed into another prime (718664329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359334164 + 359334165.

It is an arithmetic number, because the mean of its divisors is an integer number (359334165).

Almost surely, 2^718668329 is an apocalyptic number.

It is an amenable number.

718668329 is a deficient number, since it is larger than the sum of its proper divisors (1).

718668329 is an equidigital number, since it uses as much as digits as its factorization.

718668329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The square root of 718668329 is about 26807.9900216335. The cubic root of 718668329 is about 895.7280382250.

The spelling of 718668329 in words is "seven hundred eighteen million, six hundred sixty-eight thousand, three hundred twenty-nine".