3520660 has 48 divisors (see below), whose sum is σ = 8692992. Its totient is φ = 1180800.

The previous prime is 3520613. The next prime is 3520663. The reversal of 3520660 is 660253.

3520660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2245 + ... + 3475.

It is an arithmetic number, because the mean of its divisors is an integer number (181104).

Almost surely, 2^3520660 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 3520660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4346496).

3520660 is an abundant number, since it is smaller than the sum of its proper divisors (5172332).

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

3520660 is a wasteful number, since it uses less digits than its factorization.

3520660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 3520660 is about 1876.3421862763. The cubic root of 3520660 is about 152.1276052175.

The spelling of 3520660 in words is "three million, five hundred twenty thousand, six hundred sixty".