1217568 has 48 divisors (see below), whose sum is σ = 3489696. Its totient is φ = 368640.

The previous prime is 1217561. The next prime is 1217617. The reversal of 1217568 is 8657121.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1217561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480 + ... + 1632.

It is an arithmetic number, because the mean of its divisors is an integer number (72702).

2^1217568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1217568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1744848).

1217568 is an abundant number, since it is smaller than the sum of its proper divisors (2272128).

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

1217568 is a wasteful number, since it uses less digits than its factorization.

1217568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 1169 counting only the distinct ones).

The product of its digits is 3360, while the sum is 30.

The square root of 1217568 is about 1103.4346378468. The cubic root of 1217568 is about 106.7819240263.

The spelling of 1217568 in words is "one million, two hundred seventeen thousand, five hundred sixty-eight".