1668898 has 16 divisors (see below), whose sum is σ = 3121344. Its totient is φ = 650160.

The previous prime is 1668889. The next prime is 1668911. The reversal of 1668898 is 8988661.

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 7 ways as a sum of consecutive naturals, for example, 5265 + ... + 5572.

It is an arithmetic number, because the mean of its divisors is an integer number (195084).

2^1668898 is an apocalyptic number.

1668898 is a deficient number, since it is larger than the sum of its proper divisors (1452446).

1668898 is a wasteful number, since it uses less digits than its factorization.

1668898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10857.

The product of its digits is 165888, while the sum is 46.

The square root of 1668898 is about 1291.8583513683. The cubic root of 1668898 is about 118.6159973189.

The spelling of 1668898 in words is "one million, six hundred sixty-eight thousand, eight hundred ninety-eight".