65484720 has 320 divisors, whose sum is σ = 265697280. Its totient is φ = 14515200.

The previous prime is 65484719. The next prime is 65484721. The reversal of 65484720 is 2748456.

It is an interprime number because it is at equal distance from previous prime (65484719) and next prime (65484721).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65484721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 922285 + ... + 922355.

It is an arithmetic number, because the mean of its divisors is an integer number (830304).

Almost surely, 2^65484720 is an apocalyptic number.

65484720 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 65484720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132848640).

65484720 is an abundant number, since it is smaller than the sum of its proper divisors (200212560).

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

65484720 is a wasteful number, since it uses less digits than its factorization.

65484720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 65484720 is about 8092.2629715056. The cubic root of 65484720 is about 403.0695510538.

The spelling of 65484720 in words is "sixty-five million, four hundred eighty-four thousand, seven hundred twenty".