406603343 has 2 divisors, whose sum is σ = 406603344. Its totient is φ = 406603342.

The previous prime is 406603321. The next prime is 406603349. The reversal of 406603343 is 343306604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406603343 - 2¹² = 406599247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406603349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203301671 + 203301672.

It is an arithmetic number, because the mean of its divisors is an integer number (203301672).

Almost surely, 2^406603343 is an apocalyptic number.

406603343 is a deficient number, since it is larger than the sum of its proper divisors (1).

406603343 is an equidigital number, since it uses as much as digits as its factorization.

406603343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 29.

The square root of 406603343 is about 20164.4078266633. The cubic root of 406603343 is about 740.8386784168.

Adding to 406603343 its reverse (343306604), we get a palindrome (749909947).

The spelling of 406603343 in words is "four hundred six million, six hundred three thousand, three hundred forty-three".