826913 has 4 divisors (see below), whose sum is σ = 849300. Its totient is φ = 804528.

The previous prime is 826907. The next prime is 826921. The reversal of 826913 is 319628.

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

It can be written as a sum of positive squares in 2 ways, for example, as 446224 + 380689 = 668^2 + 617^2 .

It is not a de Polignac number, because 826913 - 2⁶ = 826849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (826963) 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, 11138 + ... + 11211.

It is an arithmetic number, because the mean of its divisors is an integer number (212325).

2⁸²⁶⁹¹³ is an apocalyptic number.

It is an amenable number.

826913 is a deficient number, since it is larger than the sum of its proper divisors (22387).

826913 is a wasteful number, since it uses less digits than its factorization.

826913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22386.

The product of its digits is 2592, while the sum is 29.

The square root of 826913 is about 909.3475683148. The cubic root of 826913 is about 93.8613089762.

The spelling of 826913 in words is "eight hundred twenty-six thousand, nine hundred thirteen".