3261560 has 32 divisors (see below), whose sum is σ = 7454160. Its totient is φ = 1284096.

The previous prime is 3261553. The next prime is 3261581. The reversal of 3261560 is 651623.

It is an Ulam number.

It is a plaindrome in base 12.

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, 2072 + ... + 3288.

Almost surely, 2^3261560 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 3261560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3727080).

3261560 is an abundant number, since it is smaller than the sum of its proper divisors (4192600).

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

3261560 is a wasteful number, since it uses less digits than its factorization.

3261560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295 (or 1291 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 3261560 is about 1805.9789589029. The cubic root of 3261560 is about 148.3002184491.

The spelling of 3261560 in words is "three million, two hundred sixty-one thousand, five hundred sixty".