1220546 has 8 divisors (see below), whose sum is σ = 1851660. Its totient is φ = 603328.

The previous prime is 1220507. The next prime is 1220591. The reversal of 1220546 is 6450221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 923521 + 297025 = 961^2 + 545^2 .

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3251 + ... + 3606.

2^1220546 is an apocalyptic number.

1220546 is a deficient number, since it is larger than the sum of its proper divisors (631114).

1220546 is an equidigital number, since it uses as much as digits as its factorization.

1220546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6948.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1220546 is about 1104.7832366578. The cubic root of 1220546 is about 106.8689109990.

Adding to 1220546 its reverse (6450221), we get a palindrome (7670767).

The spelling of 1220546 in words is "one million, two hundred twenty thousand, five hundred forty-six".