64505208 has 64 divisors (see below), whose sum is σ = 175404960. Its totient is φ = 19685376.

The previous prime is 64505183. The next prime is 64505227. The reversal of 64505208 is 80250546.

64505208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12960 + ... + 17232.

Almost surely, 2^64505208 is an apocalyptic number.

64505208 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 64505208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87702480).

64505208 is an abundant number, since it is smaller than the sum of its proper divisors (110899752).

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

64505208 is a wasteful number, since it uses less digits than its factorization.

64505208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4336 (or 4332 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 64505208 is about 8031.5134314773. The cubic root of 64505208 is about 401.0497592703.

The spelling of 64505208 in words is "sixty-four million, five hundred five thousand, two hundred eight".