1406213 has 2 divisors, whose sum is σ = 1406214. Its totient is φ = 1406212.

The previous prime is 1406173. The next prime is 1406221. The reversal of 1406213 is 3126041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1399489 + 6724 = 1183^2 + 82^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1406213 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1406191 and 1406200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1426213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703106 + 703107.

It is an arithmetic number, because the mean of its divisors is an integer number (703107).

2^1406213 is an apocalyptic number.

It is an amenable number.

1406213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406213 is an equidigital number, since it uses as much as digits as its factorization.

1406213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1406213 is about 1185.8385218907. The cubic root of 1406213 is about 112.0341360658.

The spelling of 1406213 in words is "one million, four hundred six thousand, two hundred thirteen".