1216612 has 6 divisors (see below), whose sum is σ = 2129078. Its totient is φ = 608304.

The previous prime is 1216603. The next prime is 1216619. The reversal of 1216612 is 2166121.

It can be written as a sum of positive squares in only one way, i.e., 1069156 + 147456 = 1034^2 + 384^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1216612.

It is not an unprimeable number, because it can be changed into a prime (1216619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152073 + ... + 152080.

2^1216612 is an apocalyptic number.

It is an amenable number.

1216612 is a deficient number, since it is larger than the sum of its proper divisors (912466).

1216612 is a wasteful number, since it uses less digits than its factorization.

1216612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304157 (or 304155 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 1216612 is about 1103.0013599266. The cubic root of 1216612 is about 106.7539693252.

The spelling of 1216612 in words is "one million, two hundred sixteen thousand, six hundred twelve".