805213 has 2 divisors, whose sum is σ = 805214. Its totient is φ = 805212.

The previous prime is 805187. The next prime is 805219. The reversal of 805213 is 312508.

It is a happy number.

805213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 466489 + 338724 = 683^2 + 582^2 .

It is a cyclic number.

It is not a de Polignac number, because 805213 - 2¹³ = 797021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402606 + 402607.

It is an arithmetic number, because the mean of its divisors is an integer number (402607).

2⁸⁰⁵²¹³ is an apocalyptic number.

It is an amenable number.

805213 is a deficient number, since it is larger than the sum of its proper divisors (1).

805213 is an equidigital number, since it uses as much as digits as its factorization.

805213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 805213 is about 897.3366146547. The cubic root of 805213 is about 93.0329786305.

The spelling of 805213 in words is "eight hundred five thousand, two hundred thirteen".