6775031440 has 20 divisors (see below), whose sum is σ = 15751948284. Its totient is φ = 2710012544.

The previous prime is 6775031399. The next prime is 6775031447. The reversal of 6775031440 is 441305776.

It can be written as a sum of positive squares in 2 ways, for example, as 1351003536 + 5424027904 = 36756^2 + 73648^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 6775031440.

It is not an unprimeable number, because it can be changed into a prime (6775031447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42343867 + ... + 42344026.

Almost surely, 2^6775031440 is an apocalyptic number.

It is an amenable number.

6775031440 is an abundant number, since it is smaller than the sum of its proper divisors (8976916844).

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

6775031440 is a wasteful number, since it uses less digits than its factorization.

6775031440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84687906 (or 84687900 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 6775031440 is about 82310.5791499489. The cubic root of 6775031440 is about 1892.2148143950.

The spelling of 6775031440 in words is "six billion, seven hundred seventy-five million, thirty-one thousand, four hundred forty".