1216106 has 8 divisors (see below), whose sum is σ = 1840644. Its totient is φ = 602560.

The previous prime is 1216091. The next prime is 1216109. The reversal of 1216106 is 6016121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1018081 + 198025 = 1009^2 + 445^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1216109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2465 + ... + 2916.

2^1216106 is an apocalyptic number.

1216106 is a deficient number, since it is larger than the sum of its proper divisors (624538).

1216106 is a wasteful number, since it uses less digits than its factorization.

1216106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5496.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1216106 is about 1102.7719619214. The cubic root of 1216106 is about 106.7391672905.

The spelling of 1216106 in words is "one million, two hundred sixteen thousand, one hundred six".