6728149107 has 6 divisors (see below), whose sum is σ = 9718437612. Its totient is φ = 4485432732.

The previous prime is 6728149091. The next prime is 6728149133. The reversal of 6728149107 is 7019418276.

It is a happy number.

It is not a de Polignac number, because 6728149107 - 2⁴ = 6728149091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6728149157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 373786053 + ... + 373786070.

It is an arithmetic number, because the mean of its divisors is an integer number (1619739602).

Almost surely, 2^6728149107 is an apocalyptic number.

6728149107 is a deficient number, since it is larger than the sum of its proper divisors (2990288505).

6728149107 is a wasteful number, since it uses less digits than its factorization.

6728149107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747572129 (or 747572126 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 6728149107 is about 82025.2955313177. The cubic root of 6728149107 is about 1887.8400814759.

The spelling of 6728149107 in words is "six billion, seven hundred twenty-eight million, one hundred forty-nine thousand, one hundred seven".