718423 has 2 divisors, whose sum is σ = 718424. Its totient is φ = 718422.

The previous prime is 718411. The next prime is 718427. The reversal of 718423 is 324817.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 718423 - 2⁵ = 718391 is a prime.

It is a super-2 number, since 2×718423² = 1032263213858, which contains 22 as substring.

718423 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (718427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359211 + 359212.

It is an arithmetic number, because the mean of its divisors is an integer number (359212).

2⁷¹⁸⁴²³ is an apocalyptic number.

718423 is a deficient number, since it is larger than the sum of its proper divisors (1).

718423 is an equidigital number, since it uses as much as digits as its factorization.

718423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 718423 is about 847.5983718720. The cubic root of 718423 is about 89.5626102898.

The spelling of 718423 in words is "seven hundred eighteen thousand, four hundred twenty-three".