6503780747 has 4 divisors (see below), whose sum is σ = 6510164280. Its totient is φ = 6497397216.

The previous prime is 6503780719. The next prime is 6503780753. The reversal of 6503780747 is 7470873056.

6503780747 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6503780747 - 2¹⁸ = 6503518603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6503780707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3190238 + ... + 3192275.

It is an arithmetic number, because the mean of its divisors is an integer number (1627541070).

Almost surely, 2^6503780747 is an apocalyptic number.

6503780747 is a deficient number, since it is larger than the sum of its proper divisors (6383533).

6503780747 is a wasteful number, since it uses less digits than its factorization.

6503780747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6383532.

The product of its (nonzero) digits is 987840, while the sum is 47.

The square root of 6503780747 is about 80646.0212719760. The cubic root of 6503780747 is about 1866.6173462344.

The spelling of 6503780747 in words is "six billion, five hundred three million, seven hundred eighty thousand, seven hundred forty-seven".