64435000 has 120 divisors (see below), whose sum is σ = 176287320. Its totient is φ = 22008000.

The previous prime is 64434991. The next prime is 64435001. The reversal of 64435000 is 53446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64435001) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 244869 + ... + 245131.

It is an arithmetic number, because the mean of its divisors is an integer number (1469061).

Almost surely, 2^64435000 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 64435000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88143660).

64435000 is an abundant number, since it is smaller than the sum of its proper divisors (111852320).

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

64435000 is a wasteful number, since it uses less digits than its factorization.

64435000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 64435000 is about 8027.1414588258. The cubic root of 64435000 is about 400.9042044954.

Adding to 64435000 its reverse (53446), we get a palindrome (64488446).

The spelling of 64435000 in words is "sixty-four million, four hundred thirty-five thousand".