4003660 has 12 divisors (see below), whose sum is σ = 8407728. Its totient is φ = 1601456.

The previous prime is 4003579. The next prime is 4003663. The reversal of 4003660 is 663004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4003663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100072 + ... + 100111.

It is an arithmetic number, because the mean of its divisors is an integer number (700644).

Almost surely, 2^4003660 is an apocalyptic number.

It is an amenable number.

4003660 is an abundant number, since it is smaller than the sum of its proper divisors (4404068).

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

4003660 is a wasteful number, since it uses less digits than its factorization.

4003660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200192 (or 200190 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 4003660 is about 2000.9147907895. The cubic root of 4003660 is about 158.7885061696.

Adding to 4003660 its reverse (663004), we get a palindrome (4666664).

The spelling of 4003660 in words is "four million, three thousand, six hundred sixty".