65244480 has 336 divisors, whose sum is σ = 257129280. Its totient is φ = 13934592.

The previous prime is 65244451. The next prime is 65244481. The reversal of 65244480 is 8444256.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65244481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 893724 + ... + 893796.

Almost surely, 2^65244480 is an apocalyptic number.

65244480 is a gapful number since it is divisible by the number (60) 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 65244480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128564640).

65244480 is an abundant number, since it is smaller than the sum of its proper divisors (191884800).

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

65244480 is a wasteful number, since it uses less digits than its factorization.

65244480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 65244480 is about 8077.4055240529. The cubic root of 65244480 is about 402.5760410838.

The spelling of 65244480 in words is "sixty-five million, two hundred forty-four thousand, four hundred eighty".