6540750 has 160 divisors (see below), whose sum is σ = 20386080. Its totient is φ = 1555200.

The previous prime is 6540739. The next prime is 6540827. The reversal of 6540750 is 570456.

6540750 is a `hidden beast` number, since 654 + 0 + 7 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 344241 + ... + 344259.

It is an arithmetic number, because the mean of its divisors is an integer number (127413).

Almost surely, 2^6540750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6540750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10193040).

6540750 is an abundant number, since it is smaller than the sum of its proper divisors (13845330).

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

6540750 is a wasteful number, since it uses less digits than its factorization.

6540750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 6540750 is about 2557.4890029089. The cubic root of 6540750 is about 187.0147452317.

The spelling of 6540750 in words is "six million, five hundred forty thousand, seven hundred fifty".