190623 has 4 divisors (see below), whose sum is σ = 254168. Its totient is φ = 127080.

The previous prime is 190613. The next prime is 190633. The reversal of 190623 is 326091.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (190613) and next prime (190633).

It is not a de Polignac number, because 190623 - 2⁴ = 190607 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190613) by changing a digit.

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, 31768 + ... + 31773.

It is an arithmetic number, because the mean of its divisors is an integer number (63542).

2¹⁹⁰⁶²³ is an apocalyptic number.

190623 is a deficient number, since it is larger than the sum of its proper divisors (63545).

190623 is an equidigital number, since it uses as much as digits as its factorization.

190623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63544.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 190623 is about 436.6039395150. The cubic root of 190623 is about 57.5517366738.

The spelling of 190623 in words is "one hundred ninety thousand, six hundred twenty-three".