6759985 has 4 divisors (see below), whose sum is σ = 8111988. Its totient is φ = 5407984.

The previous prime is 6759983. The next prime is 6759989. The reversal of 6759985 is 5899576.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2614689 + 4145296 = 1617^2 + 2036^2 .

It is a cyclic number.

It is not a de Polignac number, because 6759985 - 2¹ = 6759983 is a prime.

It is a d-powerful number, because it can be written as 6 + 7⁵ + 5 + 9⁴ + 9⁷ + 8³ + 5⁹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6759983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675994 + ... + 676003.

It is an arithmetic number, because the mean of its divisors is an integer number (2027997).

Almost surely, 2^6759985 is an apocalyptic number.

It is an amenable number.

6759985 is a deficient number, since it is larger than the sum of its proper divisors (1352003).

6759985 is a wasteful number, since it uses less digits than its factorization.

6759985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352002.

The product of its digits is 680400, while the sum is 49.

The square root of 6759985 is about 2599.9971153830. The cubic root of 6759985 is about 189.0812990664.

It can be divided in two parts, 6759 and 985, that added together give a square (7744 = 88²).

The spelling of 6759985 in words is "six million, seven hundred fifty-nine thousand, nine hundred eighty-five".