6749997697 has 4 divisors (see below), whose sum is σ = 6750174676. Its totient is φ = 6749820720.

The previous prime is 6749997647. The next prime is 6749997701. The reversal of 6749997697 is 7967999476.

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 2281877361 + 4468120336 = 47769^2 + 66844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6749997697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6749997607) 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 3 ways as a sum of consecutive naturals, for example, 5058 + ... + 116299.

It is an arithmetic number, because the mean of its divisors is an integer number (1687543669).

Almost surely, 2^6749997697 is an apocalyptic number.

It is an amenable number.

6749997697 is a deficient number, since it is larger than the sum of its proper divisors (176979).

6749997697 is a wasteful number, since it uses less digits than its factorization.

6749997697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176978.

The product of its digits is 324060912, while the sum is 73.

The square root of 6749997697 is about 82158.3696101621. The cubic root of 6749997697 is about 1889.8813599091.

It can be divided in two parts, 674999 and 7697, that added together give a triangular number (682696 = T₁₁₆₈).

The spelling of 6749997697 in words is "six billion, seven hundred forty-nine million, nine hundred ninety-seven thousand, six hundred ninety-seven".