1221774 has 16 divisors (see below), whose sum is σ = 2461008. Its totient is φ = 404352.

The previous prime is 1221767. The next prime is 1221791. The reversal of 1221774 is 4771221.

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, 294 + ... + 1590.

It is an arithmetic number, because the mean of its divisors is an integer number (153813).

2^1221774 is an apocalyptic number.

1221774 is an abundant number, since it is smaller than the sum of its proper divisors (1239234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221774 is a wasteful number, since it uses less digits than its factorization.

1221774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459.

The product of its digits is 784, while the sum is 24.

The square root of 1221774 is about 1105.3388620690. The cubic root of 1221774 is about 106.9047395094.

Adding to 1221774 its reverse (4771221), we get a palindrome (5992995).

The spelling of 1221774 in words is "one million, two hundred twenty-one thousand, seven hundred seventy-four".