64424416 has 72 divisors (see below), whose sum is σ = 149012136. Its totient is φ = 27336960.

The previous prime is 64424413. The next prime is 64424429. The reversal of 64424416 is 61442446.

64424416 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 not an unprimeable number, because it can be changed into a prime (64424413) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 283695 + ... + 283921.

It is an arithmetic number, because the mean of its divisors is an integer number (2069613).

Almost surely, 2^64424416 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 64424416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74506068).

64424416 is an abundant number, since it is smaller than the sum of its proper divisors (84587720).

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

64424416 is a wasteful number, since it uses less digits than its factorization.

64424416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 417 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 64424416 is about 8026.4821684222. The cubic root of 64424416 is about 400.8822526450.

The spelling of 64424416 in words is "sixty-four million, four hundred twenty-four thousand, four hundred sixteen".