1227663 has 16 divisors (see below), whose sum is σ = 1864800. Its totient is φ = 797760.

The previous prime is 1227659. The next prime is 1227683. The reversal of 1227663 is 3667221.

It is a happy number.

It is a Cunningham number, because it is equal to 1108²-1.

It is not a de Polignac number, because 1227663 - 2² = 1227659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227683) 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 15 ways as a sum of consecutive naturals, for example, 553 + ... + 1661.

It is an arithmetic number, because the mean of its divisors is an integer number (116550).

2^1227663 is an apocalyptic number.

1227663 is a deficient number, since it is larger than the sum of its proper divisors (637137).

1227663 is a wasteful number, since it uses less digits than its factorization.

1227663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159 (or 1153 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 1227663 is about 1107.9995487364. Note that the first 3 decimals coincide. The cubic root of 1227663 is about 107.0762259999.

The spelling of 1227663 in words is "one million, two hundred twenty-seven thousand, six hundred sixty-three".