6850128677 has 4 divisors (see below), whose sum is σ = 7828718496. Its totient is φ = 5871538860.

The previous prime is 6850128671. The next prime is 6850128689. The reversal of 6850128677 is 7768210586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7768210586 = 2 ⋅3884105293.

It is a cyclic number.

It is not a de Polignac number, because 6850128677 - 2⁴ = 6850128661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6850128671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489294899 + ... + 489294912.

It is an arithmetic number, because the mean of its divisors is an integer number (1957179624).

Almost surely, 2^6850128677 is an apocalyptic number.

It is an amenable number.

6850128677 is a deficient number, since it is larger than the sum of its proper divisors (978589819).

6850128677 is an equidigital number, since it uses as much as digits as its factorization.

6850128677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978589818.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The square root of 6850128677 is about 82765.5041487696. The cubic root of 6850128677 is about 1899.1805031923.

The spelling of 6850128677 in words is "six billion, eight hundred fifty million, one hundred twenty-eight thousand, six hundred seventy-seven".