6545880 has 256 divisors, whose sum is σ = 25920000. Its totient is φ = 1451520.

The previous prime is 6545879. The next prime is 6545881. The reversal of 6545880 is 885456.

It is a happy number.

6545880 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6545879) and next prime (6545881).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6545881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 225706 + ... + 225734.

It is an arithmetic number, because the mean of its divisors is an integer number (101250).

Almost surely, 2^6545880 is an apocalyptic number.

6545880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6545880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12960000).

6545880 is an abundant number, since it is smaller than the sum of its proper divisors (19374120).

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

6545880 is a wasteful number, since it uses less digits than its factorization.

6545880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 6545880 is about 2558.4917431956. The cubic root of 6545880 is about 187.0636251987.

The spelling of 6545880 in words is "six million, five hundred forty-five thousand, eight hundred eighty".