1698098 has 4 divisors (see below), whose sum is σ = 2547150. Its totient is φ = 849048.

The previous prime is 1698089. The next prime is 1698101. The reversal of 1698098 is 8908961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8908961 = 1433 ⋅6217.

It can be written as a sum of positive squares in only one way, i.e., 1697809 + 289 = 1303^2 + 17^2 .

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 as a sum of consecutive naturals, namely, 424523 + ... + 424526.

2^1698098 is an apocalyptic number.

1698098 is a deficient number, since it is larger than the sum of its proper divisors (849052).

1698098 is an equidigital number, since it uses as much as digits as its factorization.

1698098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849051.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 1698098 is about 1303.1108932090. The cubic root of 1698098 is about 119.3037926803.

The spelling of 1698098 in words is "one million, six hundred ninety-eight thousand, ninety-eight".