890195 has 4 divisors (see below), whose sum is σ = 1068240. Its totient is φ = 712152.

The previous prime is 890177. The next prime is 890221. The reversal of 890195 is 591098.

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 890195 - 2¹⁰ = 889171 is a prime.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89015 + ... + 89024.

It is an arithmetic number, because the mean of its divisors is an integer number (267060).

2⁸⁹⁰¹⁹⁵ is an apocalyptic number.

890195 is a deficient number, since it is larger than the sum of its proper divisors (178045).

890195 is a wasteful number, since it uses less digits than its factorization.

890195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178044.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 890195 is about 943.5014573386. The cubic root of 890195 is about 96.1970417614.

The spelling of 890195 in words is "eight hundred ninety thousand, one hundred ninety-five".