6564140 has 24 divisors (see below), whose sum is σ = 15038352. Its totient is φ = 2386880.

The previous prime is 6564137. The next prime is 6564143. The reversal of 6564140 is 414656.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6564137) and next prime (6564143).

It is not an unprimeable number, because it can be changed into a prime (6564143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14699 + ... + 15138.

It is an arithmetic number, because the mean of its divisors is an integer number (626598).

Almost surely, 2^6564140 is an apocalyptic number.

It is an amenable number.

6564140 is an abundant number, since it is smaller than the sum of its proper divisors (8474212).

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

6564140 is a wasteful number, since it uses less digits than its factorization.

6564140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29857 (or 29855 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 6564140 is about 2562.0577667180. The cubic root of 6564140 is about 187.2374042554.

Adding to 6564140 its reverse (414656), we get a palindrome (6978796).

The spelling of 6564140 in words is "six million, five hundred sixty-four thousand, one hundred forty".