1227616 has 36 divisors (see below), whose sum is σ = 2628612. Its totient is φ = 564096.

The previous prime is 1227563. The next prime is 1227619. The reversal of 1227616 is 6167221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5295 + ... + 5521.

It is an arithmetic number, because the mean of its divisors is an integer number (73017).

2^1227616 is an apocalyptic number.

1227616 is a gapful number since it is divisible by the number (16) 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 1227616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314306).

1227616 is an abundant number, since it is smaller than the sum of its proper divisors (1400996).

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

1227616 is a wasteful number, since it uses less digits than its factorization.

1227616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 242 counting only the distinct ones).

The product of its digits is 1008, while the sum is 25.

The square root of 1227616 is about 1107.9783391385. The cubic root of 1227616 is about 107.0748595427.

The spelling of 1227616 in words is "one million, two hundred twenty-seven thousand, six hundred sixteen".