826261 has 4 divisors (see below), whose sum is σ = 836800. Its totient is φ = 815724.

The previous prime is 826211. The next prime is 826271. The reversal of 826261 is 162628.

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 a cyclic number.

It is not a de Polignac number, because 826261 - 2⁹ = 825749 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (826201) 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, 5151 + ... + 5308.

It is an arithmetic number, because the mean of its divisors is an integer number (209200).

2⁸²⁶²⁶¹ is an apocalyptic number.

It is an amenable number.

826261 is a deficient number, since it is larger than the sum of its proper divisors (10539).

826261 is a wasteful number, since it uses less digits than its factorization.

826261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10538.

The product of its digits is 1152, while the sum is 25.

The square root of 826261 is about 908.9889988333. The cubic root of 826261 is about 93.8366333998.

Adding to 826261 its reverse (162628), we get a palindrome (988889).

The spelling of 826261 in words is "eight hundred twenty-six thousand, two hundred sixty-one".