6728100637 has 2 divisors, whose sum is σ = 6728100638. Its totient is φ = 6728100636.

The previous prime is 6728100623. The next prime is 6728100641. The reversal of 6728100637 is 7360018276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5534467236 + 1193633401 = 74394^2 + 34549^2 .

It is a cyclic number.

It is not a de Polignac number, because 6728100637 - 2¹¹ = 6728098589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6728100637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6728100607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3364050318 + 3364050319.

It is an arithmetic number, because the mean of its divisors is an integer number (3364050319).

Almost surely, 2^6728100637 is an apocalyptic number.

It is an amenable number.

6728100637 is a deficient number, since it is larger than the sum of its proper divisors (1).

6728100637 is an equidigital number, since it uses as much as digits as its factorization.

6728100637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 6728100637 is about 82025.0000731484. Note that the first 4 decimals coincide. The cubic root of 6728100637 is about 1887.8355480930.

The spelling of 6728100637 in words is "six billion, seven hundred twenty-eight million, one hundred thousand, six hundred thirty-seven".