3561980 has 24 divisors (see below), whose sum is σ = 7521360. Its totient is φ = 1416960.

The previous prime is 3561977. The next prime is 3561997. The reversal of 3561980 is 891653.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4451 + ... + 5189.

It is an arithmetic number, because the mean of its divisors is an integer number (313390).

Almost surely, 2^3561980 is an apocalyptic number.

It is an amenable number.

3561980 is an abundant number, since it is smaller than the sum of its proper divisors (3959380).

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

3561980 is a wasteful number, since it uses less digits than its factorization.

3561980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 987 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 3561980 is about 1887.3208524255. The cubic root of 3561980 is about 152.7204372757.

The spelling of 3561980 in words is "three million, five hundred sixty-one thousand, nine hundred eighty".