1218568 has 16 divisors (see below), whose sum is σ = 2460780. Its totient is φ = 562368.

The previous prime is 1218559. The next prime is 1218571. The reversal of 1218568 is 8658121.

It can be written as a sum of positive squares in 2 ways, for example, as 879844 + 338724 = 938^2 + 582^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5755 + ... + 5962.

2^1218568 is an apocalyptic number.

It is an amenable number.

1218568 is an abundant number, since it is smaller than the sum of its proper divisors (1242212).

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

1218568 is a wasteful number, since it uses less digits than its factorization.

1218568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11736 (or 11732 counting only the distinct ones).

The product of its digits is 3840, while the sum is 31.

The square root of 1218568 is about 1103.8876754453. The cubic root of 1218568 is about 106.8111496914.

The spelling of 1218568 in words is "one million, two hundred eighteen thousand, five hundred sixty-eight".