1216622 has 16 divisors (see below), whose sum is σ = 2108592. Its totient is φ = 520320.

The previous prime is 1216619. The next prime is 1216681. The reversal of 1216622 is 2266121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1216594 and 1216603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1253 + ... + 2000.

It is an arithmetic number, because the mean of its divisors is an integer number (131787).

2^1216622 is an apocalyptic number.

1216622 is a deficient number, since it is larger than the sum of its proper divisors (891970).

1216622 is a wasteful number, since it uses less digits than its factorization.

1216622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283.

The product of its digits is 288, while the sum is 20.

The square root of 1216622 is about 1103.0058930033. The cubic root of 1216622 is about 106.7542618141.

The spelling of 1216622 in words is "one million, two hundred sixteen thousand, six hundred twenty-two".