406622213 has 2 divisors, whose sum is σ = 406622214. Its totient is φ = 406622212.

The previous prime is 406622207. The next prime is 406622219. The reversal of 406622213 is 312226604.

It is a balanced prime because it is at equal distance from previous prime (406622207) and next prime (406622219).

It can be written as a sum of positive squares in only one way, i.e., 398681089 + 7941124 = 19967^2 + 2818^2 .

It is a cyclic number.

It is not a de Polignac number, because 406622213 - 2⁴ = 406622197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406622219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203311106 + 203311107.

It is an arithmetic number, because the mean of its divisors is an integer number (203311107).

Almost surely, 2^406622213 is an apocalyptic number.

It is an amenable number.

406622213 is a deficient number, since it is larger than the sum of its proper divisors (1).

406622213 is an equidigital number, since it uses as much as digits as its factorization.

406622213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 406622213 is about 20164.8757248836. The cubic root of 406622213 is about 740.8501387338.

Adding to 406622213 its reverse (312226604), we get a palindrome (718848817).

It can be divided in two parts, 40662 and 2213, that added together give a cube (42875 = 35³).

The spelling of 406622213 in words is "four hundred six million, six hundred twenty-two thousand, two hundred thirteen".