6140540 has 48 divisors (see below), whose sum is σ = 15386112. Its totient is φ = 2012736.

The previous prime is 6140539. The next prime is 6140549. The reversal of 6140540 is 450416.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6140549) 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, 2267 + ... + 4173.

It is an arithmetic number, because the mean of its divisors is an integer number (320544).

Almost surely, 2^6140540 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 6140540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7693056).

6140540 is an abundant number, since it is smaller than the sum of its proper divisors (9245572).

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

6140540 is a wasteful number, since it uses less digits than its factorization.

6140540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946 (or 1944 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 6140540 is about 2478.0112994093. The cubic root of 6140540 is about 183.1198911783.

Adding to 6140540 its reverse (450416), we get a palindrome (6590956).

The spelling of 6140540 in words is "six million, one hundred forty thousand, five hundred forty".