199500623 has 4 divisors (see below), whose sum is σ = 228000720. Its totient is φ = 171000528.

The previous prime is 199500611. The next prime is 199500667. The reversal of 199500623 is 326005991.

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 199500623 - 2²⁴ = 182723407 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 (199500823) 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, 14250038 + ... + 14250051.

It is an arithmetic number, because the mean of its divisors is an integer number (57000180).

Almost surely, 2^199500623 is an apocalyptic number.

199500623 is a deficient number, since it is larger than the sum of its proper divisors (28500097).

199500623 is an equidigital number, since it uses as much as digits as its factorization.

199500623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28500096.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 199500623 is about 14124.4689457693. The cubic root of 199500623 is about 584.3164129088.

The spelling of 199500623 in words is "one hundred ninety-nine million, five hundred thousand, six hundred twenty-three".