6542864 has 40 divisors (see below), whose sum is σ = 13392000. Its totient is φ = 3092096.

The previous prime is 6542857. The next prime is 6542867. The reversal of 6542864 is 4682456.

It is not an unprimeable number, because it can be changed into a prime (6542867) 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, 27257 + ... + 27495.

It is an arithmetic number, because the mean of its divisors is an integer number (334800).

Almost surely, 2^6542864 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 6542864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6696000).

6542864 is an abundant number, since it is smaller than the sum of its proper divisors (6849136).

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

6542864 is a wasteful number, since it uses less digits than its factorization.

6542864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 329 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 6542864 is about 2557.9022655293. The cubic root of 6542864 is about 187.0348910655.

The spelling of 6542864 in words is "six million, five hundred forty-two thousand, eight hundred sixty-four".