1227660 has 96 divisors (see below), whose sum is σ = 4085760. Its totient is φ = 269568.

The previous prime is 1227659. The next prime is 1227683. The reversal of 1227660 is 667221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1227660.

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 31 ways as a sum of consecutive naturals, for example, 15501 + ... + 15579.

It is an arithmetic number, because the mean of its divisors is an integer number (42560).

2^1227660 is an apocalyptic number.

1227660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1227660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2042880).

1227660 is an abundant number, since it is smaller than the sum of its proper divisors (2858100).

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

1227660 is a wasteful number, since it uses less digits than its factorization.

1227660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1227660 is about 1107.9981949444. The cubic root of 1227660 is about 107.0761387802.

It can be divided in two parts, 12 and 27660, that added together give a palindrome (27672).

The spelling of 1227660 in words is "one million, two hundred twenty-seven thousand, six hundred sixty".