6780533761 has 8 divisors (see below), whose sum is σ = 7020988200. Its totient is φ = 6540522240.

The previous prime is 6780533737. The next prime is 6780533777. The reversal of 6780533761 is 1673350876.

It can be written as a sum of positive squares in 4 ways, for example, as 925376400 + 5855157361 = 30420^2 + 76519^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6780533761 - 2⁵ = 6780533729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6780533701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79416 + ... + 140953.

It is an arithmetic number, because the mean of its divisors is an integer number (877623525).

Almost surely, 2^6780533761 is an apocalyptic number.

It is an amenable number.

6780533761 is a deficient number, since it is larger than the sum of its proper divisors (240454439).

6780533761 is a wasteful number, since it uses less digits than its factorization.

6780533761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221459.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 6780533761 is about 82343.9965085494. The cubic root of 6780533761 is about 1892.7269279351.

The spelling of 6780533761 in words is "six billion, seven hundred eighty million, five hundred thirty-three thousand, seven hundred sixty-one".