1218006 has 24 divisors (see below), whose sum is σ = 2661984. Its totient is φ = 402480.

The previous prime is 1217989. The next prime is 1218017. The reversal of 1218006 is 6008121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 1218006.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 2611 + ... + 3041.

It is an arithmetic number, because the mean of its divisors is an integer number (110916).

2^1218006 is an apocalyptic number.

1218006 is an abundant number, since it is smaller than the sum of its proper divisors (1443978).

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

1218006 is a wasteful number, since it uses less digits than its factorization.

1218006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1218006 is about 1103.6330912038. The cubic root of 1218006 is about 106.7947268364.

The spelling of 1218006 in words is "one million, two hundred eighteen thousand, six".