1663446 has 32 divisors (see below), whose sum is σ = 3502080. Its totient is φ = 526176.

The previous prime is 1663397. The next prime is 1663457. The reversal of 1663446 is 6443661.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13035 + ... + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (109440).

2^1663446 is an apocalyptic number.

1663446 is an abundant number, since it is smaller than the sum of its proper divisors (1838634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1663446 is a wasteful number, since it uses less digits than its factorization.

1663446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228.

The product of its digits is 10368, while the sum is 30.

The square root of 1663446 is about 1289.7464867174. The cubic root of 1663446 is about 118.4866904527.

The spelling of 1663446 in words is "one million, six hundred sixty-three thousand, four hundred forty-six".