1224669 has 4 divisors (see below), whose sum is σ = 1632896. Its totient is φ = 816444.

The previous prime is 1224637. The next prime is 1224673. The reversal of 1224669 is 9664221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1224669 - 2⁵ = 1224637 is a prime.

It is a super-2 number, since 2×1224669² = 2999628319122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224169) 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, 204109 + ... + 204114.

It is an arithmetic number, because the mean of its divisors is an integer number (408224).

2^1224669 is an apocalyptic number.

It is an amenable number.

1224669 is a deficient number, since it is larger than the sum of its proper divisors (408227).

1224669 is an equidigital number, since it uses as much as digits as its factorization.

1224669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408226.

The product of its digits is 5184, while the sum is 30.

The square root of 1224669 is about 1106.6476403987. The cubic root of 1224669 is about 106.9891100222.

The spelling of 1224669 in words is "one million, two hundred twenty-four thousand, six hundred sixty-nine".