6697655099 has 4 divisors (see below), whose sum is σ = 6698057064. Its totient is φ = 6697253136.

The previous prime is 6697655077. The next prime is 6697655101. The reversal of 6697655099 is 9905567966.

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

It is a cyclic number.

It is not a de Polignac number, because 6697655099 - 2²⁰ = 6696606523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6697655999) 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 3 ways as a sum of consecutive naturals, for example, 174857 + ... + 209690.

It is an arithmetic number, because the mean of its divisors is an integer number (1674514266).

Almost surely, 2^6697655099 is an apocalyptic number.

6697655099 is a deficient number, since it is larger than the sum of its proper divisors (401965).

6697655099 is a wasteful number, since it uses less digits than its factorization.

6697655099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401964.

The product of its (nonzero) digits is 27556200, while the sum is 62.

The square root of 6697655099 is about 81839.2027026168. The cubic root of 6697655099 is about 1884.9836742202.

The spelling of 6697655099 in words is "six billion, six hundred ninety-seven million, six hundred fifty-five thousand, ninety-nine".