3651560 has 64 divisors (see below), whose sum is σ = 9218880. Its totient is φ = 1290240.

The previous prime is 3651559. The next prime is 3651607. The reversal of 3651560 is 651563.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18824 + ... + 19016.

It is an arithmetic number, because the mean of its divisors is an integer number (144045).

Almost surely, 2^3651560 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 3651560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4609440).

3651560 is an abundant number, since it is smaller than the sum of its proper divisors (5567320).

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

3651560 is a wasteful number, since it uses less digits than its factorization.

3651560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 3651560 is about 1910.9055444998. The cubic root of 3651560 is about 153.9901044971.

The spelling of 3651560 in words is "three million, six hundred fifty-one thousand, five hundred sixty".