698191 has 8 divisors (see below), whose sum is σ = 770000. Its totient is φ = 628992.

The previous prime is 698183. The next prime is 698239. The reversal of 698191 is 191896.

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

It is not a de Polignac number, because 698191 - 2³ = 698183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66 + ... + 1183.

It is an arithmetic number, because the mean of its divisors is an integer number (96250).

2⁶⁹⁸¹⁹¹ is an apocalyptic number.

698191 is a deficient number, since it is larger than the sum of its proper divisors (71809).

698191 is a wasteful number, since it uses less digits than its factorization.

698191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305.

The product of its digits is 3888, while the sum is 34.

The square root of 698191 is about 835.5782428953. The cubic root of 698191 is about 88.7138476042.

The spelling of 698191 in words is "six hundred ninety-eight thousand, one hundred ninety-one".