65019424 has 48 divisors (see below), whose sum is σ = 138475008. Its totient is φ = 29934592.

The previous prime is 65019419. The next prime is 65019443. The reversal of 65019424 is 42491056.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24297 + ... + 26839.

It is an arithmetic number, because the mean of its divisors is an integer number (2884896).

Almost surely, 2^65019424 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 65019424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69237504).

65019424 is an abundant number, since it is smaller than the sum of its proper divisors (73455584).

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

65019424 is a wasteful number, since it uses less digits than its factorization.

65019424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617 (or 2609 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 65019424 is about 8063.4622836595. The cubic root of 65019424 is about 402.1126224225.

The spelling of 65019424 in words is "sixty-five million, nineteen thousand, four hundred twenty-four".