826213 has 4 divisors (see below), whose sum is σ = 843840. Its totient is φ = 808588.

The previous prime is 826211. The next prime is 826271. The reversal of 826213 is 312628.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 826213 - 2¹ = 826211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (826211) 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, 8743 + ... + 8836.

It is an arithmetic number, because the mean of its divisors is an integer number (210960).

2⁸²⁶²¹³ is an apocalyptic number.

It is an amenable number.

826213 is a deficient number, since it is larger than the sum of its proper divisors (17627).

826213 is a wasteful number, since it uses less digits than its factorization.

826213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17626.

The product of its digits is 576, while the sum is 22.

The square root of 826213 is about 908.9625954900. The cubic root of 826213 is about 93.8348162800.

The spelling of 826213 in words is "eight hundred twenty-six thousand, two hundred thirteen".