190087 has 4 divisors (see below), whose sum is σ = 190960. Its totient is φ = 189216.

The previous prime is 190063. The next prime is 190093. The reversal of 190087 is 780091.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190087 is a prime.

It is a super-2 number, since 2×190087² = 72266135138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190027) 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, 214 + ... + 652.

It is an arithmetic number, because the mean of its divisors is an integer number (47740).

2¹⁹⁰⁰⁸⁷ is an apocalyptic number.

190087 is a deficient number, since it is larger than the sum of its proper divisors (873).

190087 is an equidigital number, since it uses as much as digits as its factorization.

190087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 190087 is about 435.9896787769. The cubic root of 190087 is about 57.4977440829.

The spelling of 190087 in words is "one hundred ninety thousand, eighty-seven".