6493554761 has 2 divisors, whose sum is σ = 6493554762. Its totient is φ = 6493554760.

The previous prime is 6493554757. The next prime is 6493554811. The reversal of 6493554761 is 1674553946.

6493554761 = 56980² + 56981².

It is an a-pointer prime, because the next prime (6493554811) can be obtained adding 6493554761 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3246834361 + 3246720400 = 56981^2 + 56980^2 .

It is a cyclic number.

It is not a de Polignac number, because 6493554761 - 2² = 6493554757 is a prime.

It is not a weakly prime, because it can be changed into another prime (6493554701) 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 as a sum of consecutive naturals, namely, 3246777380 + 3246777381.

It is an arithmetic number, because the mean of its divisors is an integer number (3246777381).

Almost surely, 2^6493554761 is an apocalyptic number.

6493554761 is the 56981-st centered square number.

It is an amenable number.

6493554761 is a deficient number, since it is larger than the sum of its proper divisors (1).

6493554761 is an equidigital number, since it uses as much as digits as its factorization.

6493554761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 50.

The square root of 6493554761 is about 80582.5958939025. The cubic root of 6493554761 is about 1865.6385301451.

The spelling of 6493554761 in words is "six billion, four hundred ninety-three million, five hundred fifty-four thousand, seven hundred sixty-one".