406612213 has 16 divisors (see below), whose sum is σ = 486866944. Its totient is φ = 332236080.

The previous prime is 406612201. The next prime is 406612223. The reversal of 406612213 is 312216604.

It is a cyclic number.

It is not a de Polignac number, because 406612213 - 2⁹ = 406611701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406612223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556 + ... + 28522.

It is an arithmetic number, because the mean of its divisors is an integer number (30429184).

Almost surely, 2^406612213 is an apocalyptic number.

It is an amenable number.

406612213 is a deficient number, since it is larger than the sum of its proper divisors (80254731).

406612213 is a wasteful number, since it uses less digits than its factorization.

406612213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28072.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 406612213 is about 20164.6277674546. The cubic root of 406612213 is about 740.8440654781.

Adding to 406612213 its reverse (312216604), we get a palindrome (718828817).

The spelling of 406612213 in words is "four hundred six million, six hundred twelve thousand, two hundred thirteen".