1220630 has 16 divisors (see below), whose sum is σ = 2257200. Its totient is φ = 474912.

The previous prime is 1220623. The next prime is 1220657. The reversal of 1220630 is 360221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1280 + ... + 2019.

It is an arithmetic number, because the mean of its divisors is an integer number (141075).

2^1220630 is an apocalyptic number.

1220630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220630 is a deficient number, since it is larger than the sum of its proper divisors (1036570).

1220630 is a wasteful number, since it uses less digits than its factorization.

1220630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3343.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1220630 is about 1104.8212525110. The cubic root of 1220630 is about 106.8713625747.

Adding to 1220630 its reverse (360221), we get a palindrome (1580851).

The spelling of 1220630 in words is "one million, two hundred twenty thousand, six hundred thirty".