6775720 has 48 divisors (see below), whose sum is σ = 17739540. Its totient is φ = 2322432.

The previous prime is 6775709. The next prime is 6775721. The reversal of 6775720 is 275776.

It can be written as a sum of positive squares in 2 ways, for example, as 5731236 + 1044484 = 2394^2 + 1022^2 .

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (6775721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232 + ... + 3688.

Almost surely, 2^6775720 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 6775720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8869770).

6775720 is an abundant number, since it is smaller than the sum of its proper divisors (10963820).

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

6775720 is a wasteful number, since it uses less digits than its factorization.

6775720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3482 (or 3471 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 6775720 is about 2603.0213214647. The cubic root of 6775720 is about 189.2278915416.

The spelling of 6775720 in words is "six million, seven hundred seventy-five thousand, seven hundred twenty".