64450408 has 48 divisors (see below), whose sum is σ = 134064000. Its totient is φ = 29024160.

The previous prime is 64450403. The next prime is 64450409. The reversal of 64450408 is 80405446.

It is a self number, because there is not a number n which added to its sum of digits gives 64450408.

It is not an unprimeable number, because it can be changed into a prime (64450403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134313 + ... + 134791.

It is an arithmetic number, because the mean of its divisors is an integer number (2793000).

Almost surely, 2^64450408 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 64450408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67032000).

64450408 is an abundant number, since it is smaller than the sum of its proper divisors (69613592).

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

64450408 is a wasteful number, since it uses less digits than its factorization.

64450408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 64450408 is about 8028.1011453519. The cubic root of 64450408 is about 400.9361573145.

The spelling of 64450408 in words is "sixty-four million, four hundred fifty thousand, four hundred eight".