1798668 has 36 divisors (see below), whose sum is σ = 4815720. Its totient is φ = 564096.

The previous prime is 1798649. The next prime is 1798679. The reversal of 1798668 is 8668971.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 858 + ... + 2081.

It is an arithmetic number, because the mean of its divisors is an integer number (133770).

2^1798668 is an apocalyptic number.

1798668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1798668 is an abundant number, since it is smaller than the sum of its proper divisors (3017052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1798668 is a wasteful number, since it uses less digits than its factorization.

1798668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966 (or 2961 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 1798668 is about 1341.1442875396. The cubic root of 1798668 is about 121.6140269772.

The spelling of 1798668 in words is "one million, seven hundred ninety-eight thousand, six hundred sixty-eight".