718387 has 2 divisors, whose sum is σ = 718388. Its totient is φ = 718386.

The previous prime is 718381. The next prime is 718391. The reversal of 718387 is 783817.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 718387 - 2³ = 718379 is a prime.

It is not a weakly prime, because it can be changed into another prime (718381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359193 + 359194.

It is an arithmetic number, because the mean of its divisors is an integer number (359194).

2⁷¹⁸³⁸⁷ is an apocalyptic number.

718387 is a deficient number, since it is larger than the sum of its proper divisors (1).

718387 is an equidigital number, since it uses as much as digits as its factorization.

718387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 34.

The square root of 718387 is about 847.5771351328. The cubic root of 718387 is about 89.5611142780.

The spelling of 718387 in words is "seven hundred eighteen thousand, three hundred eighty-seven".