822013 has 2 divisors, whose sum is σ = 822014. Its totient is φ = 822012.

The previous prime is 822011. The next prime is 822037. The reversal of 822013 is 310228.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 736164 + 85849 = 858^2 + 293^2 .

It is a cyclic number.

It is not a de Polignac number, because 822013 - 2¹ = 822011 is a prime.

Together with 822011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (822011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411006 + 411007.

It is an arithmetic number, because the mean of its divisors is an integer number (411007).

2⁸²²⁰¹³ is an apocalyptic number.

It is an amenable number.

822013 is a deficient number, since it is larger than the sum of its proper divisors (1).

822013 is an equidigital number, since it uses as much as digits as its factorization.

822013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 822013 is about 906.6493258146. The cubic root of 822013 is about 93.6755450327.

The spelling of 822013 in words is "eight hundred twenty-two thousand, thirteen".