718398 has 24 divisors (see below), whose sum is σ = 1575288. Its totient is φ = 236592.

The previous prime is 718391. The next prime is 718411. The reversal of 718398 is 893817.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718391) 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 in 11 ways as a sum of consecutive naturals, for example, 1740 + ... + 2112.

It is an arithmetic number, because the mean of its divisors is an integer number (65637).

2⁷¹⁸³⁹⁸ is an apocalyptic number.

718398 is an abundant number, since it is smaller than the sum of its proper divisors (856890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

718398 is a wasteful number, since it uses less digits than its factorization.

718398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 485 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 718398 is about 847.5836241929. The cubic root of 718398 is about 89.5615713980.

The spelling of 718398 in words is "seven hundred eighteen thousand, three hundred ninety-eight".