64969344 has 128 divisors (see below), whose sum is σ = 209304000. Its totient is φ = 19676160.

The previous prime is 64969327. The next prime is 64969349. The reversal of 64969344 is 44396946.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 64969344.

It is not an unprimeable number, because it can be changed into a prime (64969349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37162 + ... + 38870.

Almost surely, 2^64969344 is an apocalyptic number.

64969344 is a gapful number since it is divisible by the number (64) 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 64969344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104652000).

64969344 is an abundant number, since it is smaller than the sum of its proper divisors (144334656).

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

64969344 is a wasteful number, since it uses less digits than its factorization.

64969344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743 (or 1725 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 64969344 is about 8060.3563196673. The cubic root of 64969344 is about 402.0093559863.

The spelling of 64969344 in words is "sixty-four million, nine hundred sixty-nine thousand, three hundred forty-four".