1216886 has 8 divisors (see below), whose sum is σ = 1991304. Its totient is φ = 553120.

The previous prime is 1216879. The next prime is 1216903. The reversal of 1216886 is 6886121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

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, 27635 + ... + 27678.

It is an arithmetic number, because the mean of its divisors is an integer number (248913).

2^1216886 is an apocalyptic number.

1216886 is a deficient number, since it is larger than the sum of its proper divisors (774418).

1216886 is a wasteful number, since it uses less digits than its factorization.

1216886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55326.

The product of its digits is 4608, while the sum is 32.

The square root of 1216886 is about 1103.1255594899. The cubic root of 1216886 is about 106.7619829433.

It can be divided in two parts, 121 and 6886, that added together give a palindrome (7007).

The spelling of 1216886 in words is "one million, two hundred sixteen thousand, eight hundred eighty-six".