198715 has 8 divisors (see below), whose sum is σ = 260208. Its totient is φ = 144480.

The previous prime is 198701. The next prime is 198719. The reversal of 198715 is 517891.

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

It is not a de Polignac number, because 198715 - 2¹³ = 190523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198719) 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, 1752 + ... + 1861.

It is an arithmetic number, because the mean of its divisors is an integer number (32526).

2¹⁹⁸⁷¹⁵ is an apocalyptic number.

198715 is a deficient number, since it is larger than the sum of its proper divisors (61493).

198715 is a wasteful number, since it uses less digits than its factorization.

198715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629.

The product of its digits is 2520, while the sum is 31.

The square root of 198715 is about 445.7746067241. The cubic root of 198715 is about 58.3548401423.

It can be divided in two parts, 1987 and 15, that added together give a palindrome (2002).

The spelling of 198715 in words is "one hundred ninety-eight thousand, seven hundred fifteen".