6503366064 has 160 divisors (see below), whose sum is σ = 18443819520. Its totient is φ = 1974266112.

The previous prime is 6503366059. The next prime is 6503366071. The reversal of 6503366064 is 4606633056.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8752477 + ... + 8753219.

It is an arithmetic number, because the mean of its divisors is an integer number (115273872).

Almost surely, 2^6503366064 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 6503366064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9221909760).

6503366064 is an abundant number, since it is smaller than the sum of its proper divisors (11940453456).

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

6503366064 is a wasteful number, since it uses less digits than its factorization.

6503366064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 39.

The square root of 6503366064 is about 80643.4502238092. The cubic root of 6503366064 is about 1866.5776733650.

The spelling of 6503366064 in words is "six billion, five hundred three million, three hundred sixty-six thousand, sixty-four".