1383666 has 8 divisors (see below), whose sum is σ = 2767344. Its totient is φ = 461220.

The previous prime is 1383659. The next prime is 1383667. The reversal of 1383666 is 6663831.

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

1383666 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1383667) 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, 115300 + ... + 115311.

It is an arithmetic number, because the mean of its divisors is an integer number (345918).

2^1383666 is an apocalyptic number.

1383666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1383666 is a wasteful number, since it uses less digits than its factorization.

1383666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230616.

The product of its digits is 15552, while the sum is 33.

The square root of 1383666 is about 1176.2933307641. The cubic root of 1383666 is about 111.4321277159.

The spelling of 1383666 in words is "one million, three hundred eighty-three thousand, six hundred sixty-six".