6490818684 has 576 divisors, whose sum is σ = 22308249600. Its totient is φ = 1607392512.

The previous prime is 6490818679. The next prime is 6490818689. The reversal of 6490818684 is 4868180946.

It is an interprime number because it is at equal distance from previous prime (6490818679) and next prime (6490818689).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 6490818684.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6490818689) 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 191 ways as a sum of consecutive naturals, for example, 110013847 + ... + 110013905.

It is an arithmetic number, because the mean of its divisors is an integer number (38729600).

Almost surely, 2^6490818684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6490818684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11154124800).

6490818684 is an abundant number, since it is smaller than the sum of its proper divisors (15817430916).

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

6490818684 is a wasteful number, since it uses less digits than its factorization.

6490818684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The square root of 6490818684 is about 80565.6172569912. The cubic root of 6490818684 is about 1865.3764627073.

The spelling of 6490818684 in words is "six billion, four hundred ninety million, eight hundred eighteen thousand, six hundred eighty-four".