1660104220 has 24 divisors (see below), whose sum is σ = 3488287824. Its totient is φ = 663647616.

The previous prime is 1660104167. The next prime is 1660104283. The reversal of 1660104220 is 224010661.

It is a junction number, because it is equal to n+sod(n) for n = 1660104191 and 1660104200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11184 + ... + 58696.

It is an arithmetic number, because the mean of its divisors is an integer number (145345326).

Almost surely, 2^1660104220 is an apocalyptic number.

1660104220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1660104220 is an abundant number, since it is smaller than the sum of its proper divisors (1828183604).

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

1660104220 is a wasteful number, since it uses less digits than its factorization.

1660104220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49269 (or 49267 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1660104220 is about 40744.3765445000. The cubic root of 1660104220 is about 1184.0729264416.

Adding to 1660104220 its reverse (224010661), we get a palindrome (1884114881).

The spelling of 1660104220 in words is "one billion, six hundred sixty million, one hundred four thousand, two hundred twenty".