3561680 has 30 divisors (see below), whose sum is σ = 8320338. Its totient is φ = 1417920.

The previous prime is 3561673. The next prime is 3561689. The reversal of 3561680 is 861653.

3561680 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2849344 + 712336 = 1688^2 + 844^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561689) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16775 + ... + 16985.

Almost surely, 2^3561680 is an apocalyptic number.

It is an amenable number.

3561680 is an abundant number, since it is smaller than the sum of its proper divisors (4758658).

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

3561680 is an equidigital number, since it uses as much as digits as its factorization.

3561680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 3561680 is about 1887.2413730098. The cubic root of 3561680 is about 152.7161496400.

The spelling of 3561680 in words is "three million, five hundred sixty-one thousand, six hundred eighty".