6491339763 has 4 divisors (see below), whose sum is σ = 8655119688. Its totient is φ = 4327559840.

The previous prime is 6491339761. The next prime is 6491339773. The reversal of 6491339763 is 3679331946.

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 6491339763 - 2¹ = 6491339761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6491339761) 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, 1081889958 + ... + 1081889963.

It is an arithmetic number, because the mean of its divisors is an integer number (2163779922).

Almost surely, 2^6491339763 is an apocalyptic number.

6491339763 is a deficient number, since it is larger than the sum of its proper divisors (2163779925).

6491339763 is a wasteful number, since it uses less digits than its factorization.

6491339763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163779924.

The product of its digits is 2204496, while the sum is 51.

The square root of 6491339763 is about 80568.8510716145. The cubic root of 6491339763 is about 1865.4263784698.

The spelling of 6491339763 in words is "six billion, four hundred ninety-one million, three hundred thirty-nine thousand, seven hundred sixty-three".