64500450 has 96 divisors (see below), whose sum is σ = 186845184. Its totient is φ = 14418240.

The previous prime is 64500409. The next prime is 64500463. The reversal of 64500450 is 5400546.

64500450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64500450.

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 47 ways as a sum of consecutive naturals, for example, 48697 + ... + 50003.

It is an arithmetic number, because the mean of its divisors is an integer number (1946304).

Almost surely, 2^64500450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64500450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93422592).

64500450 is an abundant number, since it is smaller than the sum of its proper divisors (122344734).

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

64500450 is a wasteful number, since it uses less digits than its factorization.

64500450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376 (or 1371 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 64500450 is about 8031.2172178319. The cubic root of 64500450 is about 401.0398983524.

Adding to 64500450 its reverse (5400546), we get a palindrome (69900996).

The spelling of 64500450 in words is "sixty-four million, five hundred thousand, four hundred fifty".