64535808 has 72 divisors (see below), whose sum is σ = 181899648. Its totient is φ = 20242432.

The previous prime is 64535803. The next prime is 64535833. The reversal of 64535808 is 80853546.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64535803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10585 + ... + 15527.

It is an arithmetic number, because the mean of its divisors is an integer number (2526384).

Almost surely, 2^64535808 is an apocalyptic number.

64535808 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64535808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90949824).

64535808 is an abundant number, since it is smaller than the sum of its proper divisors (117363840).

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

64535808 is a wasteful number, since it uses less digits than its factorization.

64535808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4979 (or 4965 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 64535808 is about 8033.4182014881. The cubic root of 64535808 is about 401.1131659469.

The spelling of 64535808 in words is "sixty-four million, five hundred thirty-five thousand, eight hundred eight".