1204663 has 4 divisors (see below), whose sum is σ = 1207008. Its totient is φ = 1202320.

The previous prime is 1204649. The next prime is 1204669. The reversal of 1204663 is 3664021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3664021 = 1013 ⋅3617.

It is a cyclic number.

It is not a de Polignac number, because 1204663 - 2¹³ = 1196471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31 + ... + 1552.

It is an arithmetic number, because the mean of its divisors is an integer number (301752).

2^1204663 is an apocalyptic number.

1204663 is a deficient number, since it is larger than the sum of its proper divisors (2345).

1204663 is an equidigital number, since it uses as much as digits as its factorization.

1204663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1204663 is about 1097.5714099775. The cubic root of 1204663 is about 106.4033228182.

Adding to 1204663 its reverse (3664021), we get a palindrome (4868684).

The spelling of 1204663 in words is "one million, two hundred four thousand, six hundred sixty-three".