6486681065 has 8 divisors (see below), whose sum is σ = 7861087368. Its totient is φ = 5137964800.

The previous prime is 6486681043. The next prime is 6486681067. The reversal of 6486681065 is 5601866846.

It can be written as a sum of positive squares in 4 ways, for example, as 2305248169 + 4181432896 = 48013^2 + 64664^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6486681065 - 2¹⁶ = 6486615529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6486681067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6421952 + ... + 6422961.

It is an arithmetic number, because the mean of its divisors is an integer number (982635921).

Almost surely, 2^6486681065 is an apocalyptic number.

It is an amenable number.

6486681065 is a deficient number, since it is larger than the sum of its proper divisors (1374406303).

6486681065 is a wasteful number, since it uses less digits than its factorization.

6486681065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12845019.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The square root of 6486681065 is about 80539.9345976889. The cubic root of 6486681065 is about 1864.9800125797.

The spelling of 6486681065 in words is "six billion, four hundred eighty-six million, six hundred eighty-one thousand, sixty-five".