6394916064 has 24 divisors (see below), whose sum is σ = 16786654920. Its totient is φ = 2131638656.

The previous prime is 6394916039. The next prime is 6394916081. The reversal of 6394916064 is 4606194936.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33306759 + ... + 33306950.

It is an arithmetic number, because the mean of its divisors is an integer number (699443955).

Almost surely, 2^6394916064 is an apocalyptic number.

It is an amenable number.

6394916064 is an abundant number, since it is smaller than the sum of its proper divisors (10391738856).

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

6394916064 is a wasteful number, since it uses less digits than its factorization.

6394916064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66613722 (or 66613714 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 48.

The square root of 6394916064 is about 79968.2190873349. The cubic root of 6394916064 is about 1856.1437877851.

The spelling of 6394916064 in words is "six billion, three hundred ninety-four million, nine hundred sixteen thousand, sixty-four".