798663 has 4 divisors (see below), whose sum is σ = 1064888. Its totient is φ = 532440.

The previous prime is 798649. The next prime is 798667. The reversal of 798663 is 366897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366897 = 3 ⋅122299.

It is not a de Polignac number, because 798663 - 2⁴ = 798647 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133108 + ... + 133113.

It is an arithmetic number, because the mean of its divisors is an integer number (266222).

2⁷⁹⁸⁶⁶³ is an apocalyptic number.

798663 is a deficient number, since it is larger than the sum of its proper divisors (266225).

798663 is a wasteful number, since it uses less digits than its factorization.

798663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266224.

The product of its digits is 54432, while the sum is 39.

The square root of 798663 is about 893.6794727418. The cubic root of 798663 is about 92.7800328003.

The spelling of 798663 in words is "seven hundred ninety-eight thousand, six hundred sixty-three".