3660720 has 80 divisors (see below), whose sum is σ = 12975360. Its totient is φ = 836352.

The previous prime is 3660707. The next prime is 3660721. The reversal of 3660720 is 270663.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (3660721) 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, 591 + ... + 2769.

It is an arithmetic number, because the mean of its divisors is an integer number (162192).

Almost surely, 2^3660720 is an apocalyptic number.

3660720 is a gapful number since it is divisible by the number (30) 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 3660720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6487680).

3660720 is an abundant number, since it is smaller than the sum of its proper divisors (9314640).

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

3660720 is a wasteful number, since it uses less digits than its factorization.

3660720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202 (or 2196 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 3660720 is about 1913.3008127318. The cubic root of 3660720 is about 154.1187592397.

The spelling of 3660720 in words is "three million, six hundred sixty thousand, seven hundred twenty".