890623 has 4 divisors (see below), whose sum is σ = 900720. Its totient is φ = 880528.

The previous prime is 890609. The next prime is 890653. The reversal of 890623 is 326098.

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 890623 - 2⁹ = 890111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 890591 and 890600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890653) 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, 4915 + ... + 5092.

It is an arithmetic number, because the mean of its divisors is an integer number (225180).

2⁸⁹⁰⁶²³ is an apocalyptic number.

890623 is a deficient number, since it is larger than the sum of its proper divisors (10097).

890623 is a wasteful number, since it uses less digits than its factorization.

890623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10096.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 890623 is about 943.7282447824. The cubic root of 890623 is about 96.2124562631.

The spelling of 890623 in words is "eight hundred ninety thousand, six hundred twenty-three".