406700213 has 4 divisors (see below), whose sum is σ = 406930860. Its totient is φ = 406469568.

The previous prime is 406700209. The next prime is 406700227. The reversal of 406700213 is 312007604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 153190129 + 253510084 = 12377^2 + 15922^2 .

It is a cyclic number.

It is not a de Polignac number, because 406700213 - 2² = 406700209 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 (406700113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112658 + ... + 116211.

It is an arithmetic number, because the mean of its divisors is an integer number (101732715).

Almost surely, 2^406700213 is an apocalyptic number.

It is an amenable number.

406700213 is a deficient number, since it is larger than the sum of its proper divisors (230647).

406700213 is a wasteful number, since it uses less digits than its factorization.

406700213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230646.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 406700213 is about 20166.8096881981. The cubic root of 406700213 is about 740.8975067120.

Adding to 406700213 its reverse (312007604), we get a palindrome (718707817).

The spelling of 406700213 in words is "four hundred six million, seven hundred thousand, two hundred thirteen".