1216366 has 8 divisors (see below), whose sum is σ = 1830240. Its totient is φ = 606288.

The previous prime is 1216351. The next prime is 1216373. The reversal of 1216366 is 6636121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1216366.

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, 75 + ... + 1561.

It is an arithmetic number, because the mean of its divisors is an integer number (228780).

2^1216366 is an apocalyptic number.

1216366 is a deficient number, since it is larger than the sum of its proper divisors (613874).

1216366 is a wasteful number, since it uses less digits than its factorization.

1216366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898.

The product of its digits is 1296, while the sum is 25.

The square root of 1216366 is about 1102.8898403739. The cubic root of 1216366 is about 106.7467735918.

The spelling of 1216366 in words is "one million, two hundred sixteen thousand, three hundred sixty-six".