6761238613 has 4 divisors (see below), whose sum is σ = 6769395340. Its totient is φ = 6753081888.

The previous prime is 6761238593. The next prime is 6761238637. The reversal of 6761238613 is 3168321676.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4109194609 + 2652044004 = 64103^2 + 51498^2 .

It is a cyclic number.

It is not a de Polignac number, because 6761238613 - 2⁹ = 6761238101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6761238613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6761238643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4077120 + ... + 4078777.

It is an arithmetic number, because the mean of its divisors is an integer number (1692348835).

Almost surely, 2^6761238613 is an apocalyptic number.

It is an amenable number.

6761238613 is a deficient number, since it is larger than the sum of its proper divisors (8156727).

6761238613 is an equidigital number, since it uses as much as digits as its factorization.

6761238613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8156726.

The product of its digits is 217728, while the sum is 43.

The square root of 6761238613 is about 82226.7512005673. The cubic root of 6761238613 is about 1890.9298647518.

The spelling of 6761238613 in words is "six billion, seven hundred sixty-one million, two hundred thirty-eight thousand, six hundred thirteen".