1222706 has 8 divisors (see below), whose sum is σ = 1852524. Its totient is φ = 605200.

The previous prime is 1222693. The next prime is 1222717. The reversal of 1222706 is 6072221.

It can be written as a sum of positive squares in 2 ways, for example, as 1221025 + 1681 = 1105^2 + 41^2 .

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

It is a Curzon 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, 2825 + ... + 3228.

2^1222706 is an apocalyptic number.

1222706 is a deficient number, since it is larger than the sum of its proper divisors (629818).

1222706 is a wasteful number, since it uses less digits than its factorization.

1222706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6156.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 1222706 is about 1105.7603718709. The cubic root of 1222706 is about 106.9319158102.

Adding to 1222706 its reverse (6072221), we get a palindrome (7294927).

The spelling of 1222706 in words is "one million, two hundred twenty-two thousand, seven hundred six".