698090 has 8 divisors (see below), whose sum is σ = 1256580. Its totient is φ = 279232.

The previous prime is 698083. The next prime is 698111. The reversal of 698090 is 90896.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 683929 + 14161 = 827^2 + 119^2 .

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698090.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34895 + ... + 34914.

2⁶⁹⁸⁰⁹⁰ is an apocalyptic number.

698090 is a deficient number, since it is larger than the sum of its proper divisors (558490).

698090 is a wasteful number, since it uses less digits than its factorization.

698090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69816.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 698090 is about 835.5178035207. The cubic root of 698090 is about 88.7095696293.

The spelling of 698090 in words is "six hundred ninety-eight thousand, ninety".