2230621 has 4 divisors (see below), whose sum is σ = 2361852. Its totient is φ = 2099392.

The previous prime is 2230597. The next prime is 2230633. The reversal of 2230621 is 1260322.

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 2059225 + 171396 = 1435^2 + 414^2 .

It is a cyclic number.

It is not a de Polignac number, because 2230621 - 2⁵ = 2230589 is a prime.

It is a super-3 number, since 3×2230621³ = 33296502278633319183, which contains 333 as substring.

It is a Duffinian number.

2230621 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2230595 and 2230604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2230691) 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, 65590 + ... + 65623.

It is an arithmetic number, because the mean of its divisors is an integer number (590463).

2^2230621 is an apocalyptic number.

It is an amenable number.

2230621 is a deficient number, since it is larger than the sum of its proper divisors (131231).

2230621 is a wasteful number, since it uses less digits than its factorization.

2230621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131230.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2230621 is about 1493.5263640124. The cubic root of 2230621 is about 130.6597818750.

Adding to 2230621 its reverse (1260322), we get a palindrome (3490943).

Subtracting from 2230621 its reverse (1260322), we obtain a cube (970299 = 99³).

The spelling of 2230621 in words is "two million, two hundred thirty thousand, six hundred twenty-one".