3661580 has 24 divisors (see below), whose sum is σ = 8281392. Its totient is φ = 1351872.

The previous prime is 3661573. The next prime is 3661583. The reversal of 3661580 is 851663.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3661583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6782 + ... + 7301.

It is an arithmetic number, because the mean of its divisors is an integer number (345058).

Almost surely, 2^3661580 is an apocalyptic number.

It is an amenable number.

3661580 is an abundant number, since it is smaller than the sum of its proper divisors (4619812).

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

3661580 is a wasteful number, since it uses less digits than its factorization.

3661580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14105 (or 14103 counting only the distinct ones).

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

The square root of 3661580 is about 1913.5255420297. The cubic root of 3661580 is about 154.1308271531.

It can be divided in two parts, 36 and 61580, that added together give a palindrome (61616).

The spelling of 3661580 in words is "three million, six hundred sixty-one thousand, five hundred eighty".