201113660 has 48 divisors (see below), whose sum is σ = 463397760. Its totient is φ = 72709440.

The previous prime is 201113659. The next prime is 201113663. The reversal of 201113660 is 66311102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201113663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36827 + ... + 41933.

It is an arithmetic number, because the mean of its divisors is an integer number (9654120).

Almost surely, 2^201113660 is an apocalyptic number.

201113660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201113660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231698880).

201113660 is an abundant number, since it is smaller than the sum of its proper divisors (262284100).

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

201113660 is a wasteful number, since it uses less digits than its factorization.

201113660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306 (or 5304 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 201113660 is about 14181.4547913816. The cubic root of 201113660 is about 585.8869930059.

Adding to 201113660 its reverse (66311102), we get a palindrome (267424762).

The spelling of 201113660 in words is "two hundred one million, one hundred thirteen thousand, six hundred sixty".