1224643 has 8 divisors (see below), whose sum is σ = 1410912. Its totient is φ = 1041216.

The previous prime is 1224637. The next prime is 1224673. The reversal of 1224643 is 3464221.

It is a happy number.

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 1224643 - 2⁹ = 1224131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224673) 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, 321 + ... + 1597.

It is an arithmetic number, because the mean of its divisors is an integer number (176364).

2^1224643 is an apocalyptic number.

1224643 is a deficient number, since it is larger than the sum of its proper divisors (186269).

1224643 is a wasteful number, since it uses less digits than its factorization.

1224643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421.

The product of its digits is 1152, while the sum is 22.

The square root of 1224643 is about 1106.6358931464. The cubic root of 1224643 is about 106.9883528825.

Adding to 1224643 its reverse (3464221), we get a palindrome (4688864).

The spelling of 1224643 in words is "one million, two hundred twenty-four thousand, six hundred forty-three".