6745639117 has 8 divisors (see below), whose sum is σ = 8162790336. Its totient is φ = 5441860032.

The previous prime is 6745639093. The next prime is 6745639193. The reversal of 6745639117 is 7119365476.

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

It is a de Polignac number, because none of the positive numbers 2^k-6745639117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6745699117) 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, 28342903 + ... + 28343140.

It is an arithmetic number, because the mean of its divisors is an integer number (1020348792).

Almost surely, 2^6745639117 is an apocalyptic number.

It is an amenable number.

6745639117 is a deficient number, since it is larger than the sum of its proper divisors (1417151219).

6745639117 is a wasteful number, since it uses less digits than its factorization.

6745639117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56686067.

The product of its digits is 952560, while the sum is 49.

The square root of 6745639117 is about 82131.8398491109. The cubic root of 6745639117 is about 1889.4744969210.

The spelling of 6745639117 in words is "six billion, seven hundred forty-five million, six hundred thirty-nine thousand, one hundred seventeen".