4068540 has 72 divisors (see below), whose sum is σ = 14108640. Its totient is φ = 929664.

The previous prime is 4068529. The next prime is 4068541. The reversal of 4068540 is 458604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4068541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 355 + ... + 2874.

Almost surely, 2^4068540 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 4068540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7054320).

4068540 is an abundant number, since it is smaller than the sum of its proper divisors (10040100).

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

4068540 is a wasteful number, since it uses less digits than its factorization.

4068540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251 (or 3246 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 4068540 is about 2017.0622201608. The cubic root of 4068540 is about 159.6416459055.

The spelling of 4068540 in words is "four million, sixty-eight thousand, five hundred forty".