690098 has 8 divisors (see below), whose sum is σ = 1096092. Its totient is φ = 324736.

The previous prime is 690089. The next prime is 690103. The reversal of 690098 is 890096.

It is a happy number.

690098 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 677329 + 12769 = 823^2 + 113^2 .

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

It is an unprimeable number.

690098 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10115 + ... + 10182.

2⁶⁹⁰⁰⁹⁸ is an apocalyptic number.

690098 is a deficient number, since it is larger than the sum of its proper divisors (405994).

690098 is a wasteful number, since it uses less digits than its factorization.

690098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20316.

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

The square root of 690098 is about 830.7213732654. The cubic root of 690098 is about 88.3697425162.

The spelling of 690098 in words is "six hundred ninety thousand, ninety-eight".