698257 has 8 divisors (see below), whose sum is σ = 832896. Its totient is φ = 572352.

The previous prime is 698251. The next prime is 698261. The reversal of 698257 is 752896.

698257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 698257 - 2³ = 698249 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 (698251) 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, 2008 + ... + 2329.

It is an arithmetic number, because the mean of its divisors is an integer number (104112).

2⁶⁹⁸²⁵⁷ is an apocalyptic number.

It is an amenable number.

698257 is a deficient number, since it is larger than the sum of its proper divisors (134639).

698257 is a wasteful number, since it uses less digits than its factorization.

698257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367.

The product of its digits is 30240, while the sum is 37.

The square root of 698257 is about 835.6177355705. The cubic root of 698257 is about 88.7166428897.

The spelling of 698257 in words is "six hundred ninety-eight thousand, two hundred fifty-seven".