65720160 has 240 divisors, whose sum is σ = 253571472. Its totient is φ = 15897600.

The previous prime is 65720153. The next prime is 65720191. The reversal of 65720160 is 6102756.

65720160 is a `hidden beast` number, since 657 + 2 + 0 + 1 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 142330 + ... + 142790.

Almost surely, 2^65720160 is an apocalyptic number.

65720160 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 65720160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126785736).

65720160 is an abundant number, since it is smaller than the sum of its proper divisors (187851312).

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

65720160 is a wasteful number, since it uses less digits than its factorization.

65720160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 65720160 is about 8106.7971480727. The cubic root of 65720160 is about 403.5520309902.

The spelling of 65720160 in words is "sixty-five million, seven hundred twenty thousand, one hundred sixty".