64719424 has 112 divisors (see below), whose sum is σ = 167371776. Its totient is φ = 24076800.

The previous prime is 64719383. The next prime is 64719439. The reversal of 64719424 is 42491746.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113059 + ... + 113629.

Almost surely, 2^64719424 is an apocalyptic number.

64719424 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 64719424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83685888).

64719424 is an abundant number, since it is smaller than the sum of its proper divisors (102652352).

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

64719424 is a wasteful number, since it uses less digits than its factorization.

64719424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 614 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 64719424 is about 8044.8383451751. The cubic root of 64719424 is about 401.4932188077.

The spelling of 64719424 in words is "sixty-four million, seven hundred nineteen thousand, four hundred twenty-four".