6697477749 has 16 divisors (see below), whose sum is σ = 9048614400. Its totient is φ = 4405795056.

The previous prime is 6697477741. The next prime is 6697477757. The reversal of 6697477749 is 9477747966.

It is an interprime number because it is at equal distance from previous prime (6697477741) and next prime (6697477757).

It is not a de Polignac number, because 6697477749 - 2³ = 6697477741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6697477749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6697477741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192882 + ... + 224940.

It is an arithmetic number, because the mean of its divisors is an integer number (565538400).

Almost surely, 2^6697477749 is an apocalyptic number.

It is an amenable number.

6697477749 is a deficient number, since it is larger than the sum of its proper divisors (2351136651).

6697477749 is a wasteful number, since it uses less digits than its factorization.

6697477749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32984.

The product of its digits is 112021056, while the sum is 66.

The square root of 6697477749 is about 81838.1191682702. The cubic root of 6697477749 is about 1884.9670363173.

The spelling of 6697477749 in words is "six billion, six hundred ninety-seven million, four hundred seventy-seven thousand, seven hundred forty-nine".