2103660 has 144 divisors (see below), whose sum is σ = 7338240. Its totient is φ = 483840.

The previous prime is 2103653. The next prime is 2103667. The reversal of 2103660 is 663012.

2103660 = 37³ + 38³ + ... + 56³.

It is a happy number.

2103660 is a `hidden beast` number, since 2 + 1 + 0 + 3 + 660 = 666.

It is an interprime number because it is at equal distance from previous prime (2103653) and next prime (2103667).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2103667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67845 + ... + 67875.

It is an arithmetic number, because the mean of its divisors is an integer number (50960).

2^2103660 is an apocalyptic number.

2103660 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 2103660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3669120).

2103660 is an abundant number, since it is smaller than the sum of its proper divisors (5234580).

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

2103660 is a wasteful number, since it uses less digits than its factorization.

2103660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2103660 is about 1450.3999448428. The cubic root of 2103660 is about 128.1322688718.

Adding to 2103660 its reverse (663012), we get a palindrome (2766672).

The spelling of 2103660 in words is "two million, one hundred three thousand, six hundred sixty".