1220626 has 16 divisors (see below), whose sum is σ = 2019168. Its totient is φ = 548800.

The previous prime is 1220623. The next prime is 1220657. The reversal of 1220626 is 6260221.

It is not an unprimeable number, because it can be changed into a prime (1220623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2241 + ... + 2731.

It is an arithmetic number, because the mean of its divisors is an integer number (126198).

2^1220626 is an apocalyptic number.

1220626 is a deficient number, since it is larger than the sum of its proper divisors (798542).

1220626 is a wasteful number, since it uses less digits than its factorization.

1220626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1220626 is about 1104.8194422619. The cubic root of 1220626 is about 106.8712458356.

Adding to 1220626 its reverse (6260221), we get a palindrome (7480847).

The spelling of 1220626 in words is "one million, two hundred twenty thousand, six hundred twenty-six".