190605 has 16 divisors (see below), whose sum is σ = 310464. Its totient is φ = 99840.

The previous prime is 190591. The next prime is 190607. The reversal of 190605 is 506091.

190605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 190605 - 2⁵ = 190573 is a prime.

190605 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1390 + ... + 1520.

It is an arithmetic number, because the mean of its divisors is an integer number (19404).

2¹⁹⁰⁶⁰⁵ is an apocalyptic number.

190605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

190605 is a deficient number, since it is larger than the sum of its proper divisors (119859).

190605 is a wasteful number, since it uses less digits than its factorization.

190605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 190605 is about 436.5833253802. The cubic root of 190605 is about 57.5499251333.

Adding to 190605 its reverse (506091), we get a palindrome (696696).

The spelling of 190605 in words is "one hundred ninety thousand, six hundred five".