64500008 has 8 divisors (see below), whose sum is σ = 120937530. Its totient is φ = 32250000.

The previous prime is 64500001. The next prime is 64500049. The reversal of 64500008 is 80000546.

It can be written as a sum of positive squares in only one way, i.e., 57729604 + 6770404 = 7598^2 + 2602^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (64500001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4031243 + ... + 4031258.

Almost surely, 2^64500008 is an apocalyptic number.

It is an amenable number.

64500008 is a deficient number, since it is larger than the sum of its proper divisors (56437522).

64500008 is a wasteful number, since it uses less digits than its factorization.

64500008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8062507 (or 8062503 counting only the distinct ones).

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

The square root of 64500008 is about 8031.1897001627. The cubic root of 64500008 is about 401.0389822863.

The spelling of 64500008 in words is "sixty-four million, five hundred thousand, eight".