6511040 has 28 divisors (see below), whose sum is σ = 15505176. Its totient is φ = 2604288.

The previous prime is 6511033. The next prime is 6511049. The reversal of 6511040 is 401156.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6511049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9854 + ... + 10493.

Almost surely, 2^6511040 is an apocalyptic number.

It is an amenable number.

6511040 is an abundant number, since it is smaller than the sum of its proper divisors (8994136).

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

6511040 is a wasteful number, since it uses less digits than its factorization.

6511040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20364 (or 20354 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 6511040 is about 2551.6739603641. The cubic root of 6511040 is about 186.7311568555.

Adding to 6511040 its reverse (401156), we get a palindrome (6912196).

The spelling of 6511040 in words is "six million, five hundred eleven thousand, forty".