1622213 has 8 divisors (see below), whose sum is σ = 1705536. Its totient is φ = 1540000.

The previous prime is 1622209. The next prime is 1622233. The reversal of 1622213 is 3122261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1622213 - 2² = 1622209 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1622191 and 1622200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5633 + ... + 5913.

It is an arithmetic number, because the mean of its divisors is an integer number (213192).

2^1622213 is an apocalyptic number.

It is an amenable number.

1622213 is a deficient number, since it is larger than the sum of its proper divisors (83323).

1622213 is a wasteful number, since it uses less digits than its factorization.

1622213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555.

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

The square root of 1622213 is about 1273.6612579489. The cubic root of 1622213 is about 117.4994839271.

Adding to 1622213 its reverse (3122261), we get a palindrome (4744474).

The spelling of 1622213 in words is "one million, six hundred twenty-two thousand, two hundred thirteen".