905213 has 2 divisors, whose sum is σ = 905214. Its totient is φ = 905212.

The previous prime is 905209. The next prime is 905227. The reversal of 905213 is 312509.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 708964 + 196249 = 842^2 + 443^2 .

It is an emirp because it is prime and its reverse (312509) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 905213 - 2² = 905209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (905413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452606 + 452607.

It is an arithmetic number, because the mean of its divisors is an integer number (452607).

2⁹⁰⁵²¹³ is an apocalyptic number.

It is an amenable number.

905213 is a deficient number, since it is larger than the sum of its proper divisors (1).

905213 is an equidigital number, since it uses as much as digits as its factorization.

905213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 905213 is about 951.4268232502. The cubic root of 905213 is about 96.7349906720.

Subtracting from 905213 its reverse (312509), we obtain a cube (592704 = 84³).

The spelling of 905213 in words is "nine hundred five thousand, two hundred thirteen".