1223669 has 8 divisors (see below), whose sum is σ = 1294272. Its totient is φ = 1154560.

The previous prime is 1223633. The next prime is 1223683. The reversal of 1223669 is 9663221.

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 1223669 - 2¹⁶ = 1158133 is a prime.

It is a super-2 number, since 2×1223669² = 2994731643122, which contains 22 as substring.

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 (1223689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1589 + ... + 2229.

It is an arithmetic number, because the mean of its divisors is an integer number (161784).

2^1223669 is an apocalyptic number.

It is an amenable number.

1223669 is a deficient number, since it is larger than the sum of its proper divisors (70603).

1223669 is an equidigital number, since it uses as much as digits as its factorization.

1223669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747.

The product of its digits is 3888, while the sum is 29.

The square root of 1223669 is about 1106.1957331323. The cubic root of 1223669 is about 106.9599815410.

The spelling of 1223669 in words is "one million, two hundred twenty-three thousand, six hundred sixty-nine".