6771280 has 40 divisors (see below), whose sum is σ = 16050312. Its totient is φ = 2655744.

The previous prime is 6771263. The next prime is 6771283. The reversal of 6771280 is 821776.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 501264 + 6270016 = 708^2 + 2504^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6771283) 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, 3442 + ... + 5038.

Almost surely, 2^6771280 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 6771280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8025156).

6771280 is an abundant number, since it is smaller than the sum of its proper divisors (9279032).

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

6771280 is a wasteful number, since it uses less digits than its factorization.

6771280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 1657 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 6771280 is about 2602.1683266076. The cubic root of 6771280 is about 189.1865500349.

The spelling of 6771280 in words is "six million, seven hundred seventy-one thousand, two hundred eighty".