6490865814 has 16 divisors (see below), whose sum is σ = 13080830400. Its totient is φ = 2147105480.

The previous prime is 6490865807. The next prime is 6490865819. The reversal of 6490865814 is 4185680946.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6490865819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4128264 + ... + 4129835.

It is an arithmetic number, because the mean of its divisors is an integer number (817551900).

Almost surely, 2^6490865814 is an apocalyptic number.

6490865814 is an abundant number, since it is smaller than the sum of its proper divisors (6589964586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6490865814 is a wasteful number, since it uses less digits than its factorization.

6490865814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8258235.

The product of its (nonzero) digits is 1658880, while the sum is 51.

The square root of 6490865814 is about 80565.9097509610. The cubic root of 6490865814 is about 1865.3809775450.

The spelling of 6490865814 in words is "six billion, four hundred ninety million, eight hundred sixty-five thousand, eight hundred fourteen".