4065560 has 64 divisors (see below), whose sum is σ = 9767520. Its totient is φ = 1520640.

The previous prime is 4065541. The next prime is 4065569. The reversal of 4065560 is 655604.

It is a super-2 number, since 2×4065560² = 33057556227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4065569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60647 + ... + 60713.

Almost surely, 2^4065560 is an apocalyptic number.

4065560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4065560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4883760).

4065560 is an abundant number, since it is smaller than the sum of its proper divisors (5701960).

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

4065560 is a wasteful number, since it uses less digits than its factorization.

4065560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 4065560 is about 2016.3233867612. The cubic root of 4065560 is about 159.6026599055.

The spelling of 4065560 in words is "four million, sixty-five thousand, five hundred sixty".