64199808 has 96 divisors (see below), whose sum is σ = 192853440. Its totient is φ = 20461056.

The previous prime is 64199771. The next prime is 64199827. The reversal of 64199808 is 80899146.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25285 + ... + 27707.

It is an arithmetic number, because the mean of its divisors is an integer number (2008890).

Almost surely, 2^64199808 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 64199808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96426720).

64199808 is an abundant number, since it is smaller than the sum of its proper divisors (128653632).

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

64199808 is a wasteful number, since it uses less digits than its factorization.

64199808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466 (or 2451 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 64199808 is about 8012.4782683013. The cubic root of 64199808 is about 400.4158342216.

The spelling of 64199808 in words is "sixty-four million, one hundred ninety-nine thousand, eight hundred eight".