1623213 has 16 divisors (see below), whose sum is σ = 2438400. Its totient is φ = 1067040.

The previous prime is 1623203. The next prime is 1623229. The reversal of 1623213 is 3123261.

It is not a de Polignac number, because 1623213 - 2⁴ = 1623197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623203) 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, 1753 + ... + 2513.

It is an arithmetic number, because the mean of its divisors is an integer number (152400).

2^1623213 is an apocalyptic number.

It is an amenable number.

1623213 is a deficient number, since it is larger than the sum of its proper divisors (815187).

1623213 is an equidigital number, since it uses as much as digits as its factorization.

1623213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 843 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 1623213 is about 1274.0537665264. The cubic root of 1623213 is about 117.5236228345.

Adding to 1623213 its reverse (3123261), we get a palindrome (4746474).

It can be divided in two parts, 162 and 3213, that added together give a cube (3375 = 15³).

The spelling of 1623213 in words is "one million, six hundred twenty-three thousand, two hundred thirteen".