1206213 has 4 divisors (see below), whose sum is σ = 1608288. Its totient is φ = 804140.

The previous prime is 1206209. The next prime is 1206223. The reversal of 1206213 is 3126021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1206213 - 2² = 1206209 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1206192 and 1206201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201033 + ... + 201038.

It is an arithmetic number, because the mean of its divisors is an integer number (402072).

2^1206213 is an apocalyptic number.

It is an amenable number.

1206213 is a deficient number, since it is larger than the sum of its proper divisors (402075).

1206213 is an equidigital number, since it uses as much as digits as its factorization.

1206213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402074.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1206213 is about 1098.2772873915. The cubic root of 1206213 is about 106.4489384707.

The spelling of 1206213 in words is "one million, two hundred six thousand, two hundred thirteen".