1998753 has 8 divisors (see below), whose sum is σ = 2675616. Its totient is φ = 1327200.

The previous prime is 1998739. The next prime is 1998761. The reversal of 1998753 is 3578991.

It is a happy number.

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

It is not a de Polignac number, because 1998753 - 2⁸ = 1998497 is a prime.

It is a Curzon number.

1998753 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1998793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343 + ... + 2028.

It is an arithmetic number, because the mean of its divisors is an integer number (334452).

2^1998753 is an apocalyptic number.

It is an amenable number.

1998753 is a deficient number, since it is larger than the sum of its proper divisors (676863).

1998753 is a wasteful number, since it uses less digits than its factorization.

1998753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655.

The product of its digits is 68040, while the sum is 42.

The square root of 1998753 is about 1413.7726125513. The cubic root of 1998753 is about 125.9659141863.

The spelling of 1998753 in words is "one million, nine hundred ninety-eight thousand, seven hundred fifty-three".