1224655 has 8 divisors (see below), whose sum is σ = 1517184. Its totient is φ = 948000.

The previous prime is 1224637. The next prime is 1224673. The reversal of 1224655 is 5564221.

It is an interprime number because it is at equal distance from previous prime (1224637) and next prime (1224673).

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

It is not a de Polignac number, because 1224655 - 2¹⁹ = 700367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3796 + ... + 4105.

It is an arithmetic number, because the mean of its divisors is an integer number (189648).

2^1224655 is an apocalyptic number.

1224655 is a deficient number, since it is larger than the sum of its proper divisors (292529).

1224655 is an equidigital number, since it uses as much as digits as its factorization.

1224655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7937.

The product of its digits is 2400, while the sum is 25.

The square root of 1224655 is about 1106.6413149707. The cubic root of 1224655 is about 106.9887023330.

Adding to 1224655 its reverse (5564221), we get a palindrome (6788876).

The spelling of 1224655 in words is "one million, two hundred twenty-four thousand, six hundred fifty-five".