711998 has 8 divisors (see below), whose sum is σ = 1220592. Its totient is φ = 305136.

The previous prime is 711983. The next prime is 712007. The reversal of 711998 is 899117.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

711998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 25415 + ... + 25442.

It is an arithmetic number, because the mean of its divisors is an integer number (152574).

2⁷¹¹⁹⁹⁸ is an apocalyptic number.

711998 is a deficient number, since it is larger than the sum of its proper divisors (508594).

711998 is a wasteful number, since it uses less digits than its factorization.

711998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50866.

The product of its digits is 4536, while the sum is 35.

The square root of 711998 is about 843.7997392747. The cubic root of 711998 is about 89.2948183022.

The spelling of 711998 in words is "seven hundred eleven thousand, nine hundred ninety-eight".