3660020 has 48 divisors (see below), whose sum is σ = 9464448. Its totient is φ = 1157760.

The previous prime is 3660017. The next prime is 3660023. The reversal of 3660020 is 200663.

It is an interprime number because it is at equal distance from previous prime (3660017) and next prime (3660023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3660023) 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, 815 + ... + 2825.

It is an arithmetic number, because the mean of its divisors is an integer number (197176).

Almost surely, 2^3660020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3660020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4732224).

3660020 is an abundant number, since it is smaller than the sum of its proper divisors (5804428).

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

3660020 is a wasteful number, since it uses less digits than its factorization.

3660020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040 (or 2038 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 3660020 is about 1913.1178740475. The cubic root of 3660020 is about 154.1089351242.

Adding to 3660020 its reverse (200663), we get a palindrome (3860683).

The spelling of 3660020 in words is "three million, six hundred sixty thousand, twenty".