1220083660 has 12 divisors (see below), whose sum is σ = 2562175728. Its totient is φ = 488033456.

The previous prime is 1220083643. The next prime is 1220083673. The reversal of 1220083660 is 663800221.

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, 30502072 + ... + 30502111.

It is an arithmetic number, because the mean of its divisors is an integer number (213514644).

Almost surely, 2^1220083660 is an apocalyptic number.

1220083660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220083660 is an abundant number, since it is smaller than the sum of its proper divisors (1342092068).

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

1220083660 is a wasteful number, since it uses less digits than its factorization.

1220083660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61004192 (or 61004190 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1220083660 is about 34929.6959620321. The cubic root of 1220083660 is about 1068.5541539614.

Adding to 1220083660 its reverse (663800221), we get a palindrome (1883883881).

The spelling of 1220083660 in words is "one billion, two hundred twenty million, eighty-three thousand, six hundred sixty".