198763 has 4 divisors (see below), whose sum is σ = 203040. Its totient is φ = 194488.

The previous prime is 198761. The next prime is 198769. The reversal of 198763 is 367891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198763 - 2¹ = 198761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198761) 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, 2068 + ... + 2161.

It is an arithmetic number, because the mean of its divisors is an integer number (50760).

2¹⁹⁸⁷⁶³ is an apocalyptic number.

198763 is a deficient number, since it is larger than the sum of its proper divisors (4277).

198763 is an equidigital number, since it uses as much as digits as its factorization.

198763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276.

The product of its digits is 9072, while the sum is 34.

The square root of 198763 is about 445.8284423408. The cubic root of 198763 is about 58.3595383396.

It can be divided in two parts, 198 and 763, that added together give a square (961 = 31²).

The spelling of 198763 in words is "one hundred ninety-eight thousand, seven hundred sixty-three".