64500800 has 168 divisors, whose sum is σ = 195779136. Its totient is φ = 20367360.

The previous prime is 64500791. The next prime is 64500803. The reversal of 64500800 is 800546.

It is not an unprimeable number, because it can be changed into a prime (64500803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145379 + ... + 145821.

It is an arithmetic number, because the mean of its divisors is an integer number (1165352).

Almost surely, 2^64500800 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 64500800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97889568).

64500800 is an abundant number, since it is smaller than the sum of its proper divisors (131278336).

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

64500800 is a wasteful number, since it uses less digits than its factorization.

64500800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 64500800 is about 8031.2390077746. The cubic root of 64500800 is about 401.0406237412.

The spelling of 64500800 in words is "sixty-four million, five hundred thousand, eight hundred".